Vrkoc, Ivo Some explicit conditions for maximal local diffusions in one-dimensional case. (English) Zbl 0294.60060 Czech. Math. J. 21(96), 236-256 (1971). MSC: 60J60 PDF BibTeX XML Cite \textit{I. Vrkoc}, Czech. Math. J. 21(96), 236--256 (1971; Zbl 0294.60060) Full Text: EuDML OpenURL
Mansfield, Larry The method of moving frames applied to a space of bilinear forms. (English) Zbl 0293.15024 Czech. Math. J. 21(96), 453-460 (1971). MSC: 15A63 PDF BibTeX XML Cite \textit{L. Mansfield}, Czech. Math. J. 21(96), 453--460 (1971; Zbl 0293.15024) Full Text: EuDML OpenURL
Hall, Robert E. Commutative cancellative semigroups with two generators. (English) Zbl 0244.20074 Czech. Math. J. 21(96), 449-452 (1971). MSC: 20M05 20M99 PDF BibTeX XML Cite \textit{R. E. Hall}, Czech. Math. J. 21(96), 449--452 (1971; Zbl 0244.20074) Full Text: EuDML OpenURL
Pietsch, Albrecht Interpolationsfunktoren, Folgenideale und Operatorenideale. (German) Zbl 0241.46063 Czech. Math. J. 21(96), 644-652 (1971). MSC: 46E35 47L30 PDF BibTeX XML Cite \textit{A. Pietsch}, Czech. Math. J. 21(96), 644--652 (1971; Zbl 0241.46063) Full Text: EuDML OpenURL
Suchomel, Jaromir Über die Zerlegungen von linearen homogenen Differentialoperatoren. (German) Zbl 0241.34009 Czech. Math. J. 21(96), 696-699 (1971). MSC: 34A30 47E05 PDF BibTeX XML Cite \textit{J. Suchomel}, Czech. Math. J. 21(96), 696--699 (1971; Zbl 0241.34009) Full Text: EuDML OpenURL
Sasaki, Morio; Tamura, Takayuki Positive rational semigroups and commutative power joined cancellative semigroups without idempotent. (English) Zbl 0238.20083 Czech. Math. J. 21(96), 567-576 (1971). MSC: 20M10 PDF BibTeX XML Cite \textit{M. Sasaki} and \textit{T. Tamura}, Czech. Math. J. 21(96), 567--576 (1971; Zbl 0238.20083) Full Text: EuDML OpenURL
Fulks, W.; Guenther, R. B. Damped wave equations and the heat equation. (English) Zbl 0237.35040 Czech. Math. J. 21(96), 683-695 (1971). MSC: 35K05 35B20 PDF BibTeX XML Cite \textit{W. Fulks} and \textit{R. B. Guenther}, Czech. Math. J. 21(96), 683--695 (1971; Zbl 0237.35040) Full Text: EuDML OpenURL
Sekanina, Milan Polynomials in topological algebras. (English) Zbl 0234.08007 Czech. Math. J. 21(96), 431-436 (1971). MSC: 08A40 PDF BibTeX XML Cite \textit{M. Sekanina}, Czech. Math. J. 21(96), 431--436 (1971; Zbl 0234.08007) Full Text: EuDML OpenURL
Sekaninová, Anna; Sekanina, Milan On the number of polynomials in ordered algebra. (English) Zbl 0234.06014 Czech. Math. J. 21(96), 391-398 (1971). MSC: 06F25 PDF BibTeX XML Cite \textit{A. Sekaninová} and \textit{M. Sekanina}, Czech. Math. J. 21(96), 391--398 (1971; Zbl 0234.06014) Full Text: EuDML OpenURL
Schwarz, Štefan On the structure of dual semigroups. (English) Zbl 0232.20116 Czech. Math. J. 21(96), 461-483 (1971). MSC: 20M12 PDF BibTeX XML Cite \textit{Š. Schwarz}, Czech. Math. J. 21(96), 461--483 (1971; Zbl 0232.20116) Full Text: EuDML OpenURL
Hallam, Thomas G. Asymptotic integration of a nonhomogeneous differential equation with integrable coefficients. (English) Zbl 0231.34018 Czech. Math. J. 21(96), 661-671 (1971). MSC: 34A45 34A30 PDF BibTeX XML Cite \textit{T. G. Hallam}, Czech. Math. J. 21(96), 661--671 (1971; Zbl 0231.34018) Full Text: EuDML OpenURL
Fallone, P. R. jun. Comments concerning flows near compact invariant sets. (English) Zbl 0229.54038 Czech. Math. J. 21(96), 680-682 (1971). MSC: 54H20 PDF BibTeX XML Cite \textit{P. R. Fallone jun.}, Czech. Math. J. 21(96), 680--682 (1971; Zbl 0229.54038) Full Text: EuDML OpenURL
Bergman, John G. A duality theorem for standard threads. (English) Zbl 0228.22007 Czech. Math. J. 21(96), 167-171 (1971). MSC: 22A20 22A15 PDF BibTeX XML Cite \textit{J. G. Bergman}, Czech. Math. J. 21(96), 167--171 (1971; Zbl 0228.22007) Full Text: EuDML OpenURL
Satyanarayana, M. A class of commutative semigroups in which the idempotents are linearly ordered. (English) Zbl 0228.20045 Czech. Math. J. 21(96), 633-637 (1971). MSC: 20M14 PDF BibTeX XML Cite \textit{M. Satyanarayana}, Czech. Math. J. 21(96), 633--637 (1971; Zbl 0228.20045) Full Text: EuDML OpenURL
Kim, Jin Bai Mutants in the symmetric semigroups. (English) Zbl 0228.20039 Czech. Math. J. 21(96), 355-363 (1971). MSC: 20M20 PDF BibTeX XML Cite \textit{J. B. Kim}, Czech. Math. J. 21(96), 355--363 (1971; Zbl 0228.20039) Full Text: EuDML OpenURL
Milota, Jaroslav Universal almost optimal variational methods. (English) Zbl 0226.49033 Czech. Math. J. 21(96), 291-310 (1971). MSC: 49R50 PDF BibTeX XML Cite \textit{J. Milota}, Czech. Math. J. 21(96), 291--310 (1971; Zbl 0226.49033) Full Text: EuDML OpenURL
Krylová, Naděžda; Vejvoda, Otto A linear and weakly nonlinear equation of a beam: the boundary-value problem for free extremities and its periodic solutions. (English) Zbl 0226.35008 Czech. Math. J. 21(96), 535-566 (1971). MSC: 35B10 74K10 35G15 PDF BibTeX XML Cite \textit{N. Krylová} and \textit{O. Vejvoda}, Czech. Math. J. 21(96), 535--566 (1971; Zbl 0226.35008) Full Text: EuDML OpenURL
Pechanec-Drahoš, Jaroslav Representations of presheaves of semiuniformisable spaces, and representation of a presheaf by the presheaf of all continuous sections in its covering-space. (English) Zbl 0225.54007 Czech. Math. J. 21(96), 590-609 (1971). MSC: 54B40 54E15 PDF BibTeX XML Cite \textit{J. Pechanec-Drahoš}, Czech. Math. J. 21(96), 590--609 (1971; Zbl 0225.54007) Full Text: EuDML OpenURL
Pechanec-Drahoš, Jaroslav Modifications of closure collections. (English) Zbl 0225.54006 Czech. Math. J. 21(96), 577-589 (1971). MSC: 54B40 PDF BibTeX XML Cite \textit{J. Pechanec-Drahoš}, Czech. Math. J. 21(96), 577--589 (1971; Zbl 0225.54006) Full Text: EuDML OpenURL
Dobrakov, Ivan On representation of linear operators on \(C_ 0\)(T,X). (English) Zbl 0225.47018 Czech. Math. J. 21(96), 13-30 (1971). MSC: 47B38 46G10 47B06 47A67 47A05 PDF BibTeX XML Cite \textit{I. Dobrakov}, Czech. Math. J. 21(96), 13--30 (1971; Zbl 0225.47018) Full Text: EuDML OpenURL
LaTorre, Donald R. On semigroups that are semilattices of groups. (English) Zbl 0225.20038 Czech. Math. J. 21(96), 369-370 (1971). MSC: 20M12 PDF BibTeX XML Cite \textit{D. R. LaTorre}, Czech. Math. J. 21(96), 369--370 (1971; Zbl 0225.20038) Full Text: EuDML OpenURL
Bhaumik, R. N.; Misra, D. N. A generalization of K-compact spaces. (English) Zbl 0224.54028 Czech. Math. J. 21(96), 625-632 (1971). MSC: 54D60 PDF BibTeX XML Cite \textit{R. N. Bhaumik} and \textit{D. N. Misra}, Czech. Math. J. 21(96), 625--632 (1971; Zbl 0224.54028) Full Text: EuDML OpenURL
Kučera, Jan On multipliers of temperate distributions. (English) Zbl 0224.46048 Czech. Math. J. 21(96), 610-618 (1971). MSC: 46F10 46E20 46A11 PDF BibTeX XML Cite \textit{J. Kučera}, Czech. Math. J. 21(96), 610--618 (1971; Zbl 0224.46048) Full Text: EuDML OpenURL
Bican, Ladislav A note on mixed Abelian groups. (English) Zbl 0224.20048 Czech. Math. J. 21(96), 413-417 (1971). MSC: 20K21 PDF BibTeX XML Cite \textit{L. Bican}, Czech. Math. J. 21(96), 413--417 (1971; Zbl 0224.20048) Full Text: EuDML OpenURL
Jakubík, Ján Weak product decompositions of discrete lattices. (English) Zbl 0224.06003 Czech. Math. J. 21(96), 399-412 (1971). MSC: 06B05 PDF BibTeX XML Cite \textit{J. Jakubík}, Czech. Math. J. 21(96), 399--412 (1971; Zbl 0224.06003) Full Text: EuDML OpenURL
Pandey, G. S. On the absolute Cesaro summability of the ultraspherical series. (English) Zbl 0223.42023 Czech. Math. J. 21(96), 525-534 (1971). MSC: 42C10 40F05 40G05 PDF BibTeX XML Cite \textit{G. S. Pandey}, Czech. Math. J. 21(96), 525--534 (1971; Zbl 0223.42023) Full Text: EuDML OpenURL
Singh, Raj Kishor Eberlein integral and polynomial interpolation. (English) Zbl 0223.41005 Czech. Math. J. 21(96), 638-643 (1971). MSC: 41A05 41A50 PDF BibTeX XML Cite \textit{R. K. Singh}, Czech. Math. J. 21(96), 638--643 (1971; Zbl 0223.41005) Full Text: EuDML OpenURL
Ráb, Miloš Equation Z’ = A(t) - \(Z^ 2\) coefficient of which has a small modulus. (English) Zbl 0223.34026 Czech. Math. J. 21(96), 311-317 (1971). MSC: 34M99 34C99 PDF BibTeX XML Cite \textit{M. Ráb}, Czech. Math. J. 21(96), 311--317 (1971; Zbl 0223.34026) Full Text: EuDML OpenURL
Schwabik, Štefan Stetige Abhängigkeit von einem Parameter für ein Differentialgleichungssystem mit Impulsen. (Continuous dependence of one parameter for a system of differential equations with impulses). (German) Zbl 0223.34008 Czech. Math. J. 21(96), 198-212 (1971). MSC: 34A37 34A34 PDF BibTeX XML Cite \textit{Š. Schwabik}, Czech. Math. J. 21(96), 198--212 (1971; Zbl 0223.34008) Full Text: EuDML OpenURL
Schwabik, Štefan Verallgemeinerte gewöhnliche Differentialgleichungen; Systeme mit Impulsen auf Flächen. II. (Generalized ordinary differential equations; Systems with impulses at surfaces. II). (German) Zbl 0223.34007 Czech. Math. J. 21(96), 172-197 (1971). MSC: 34A37 34A34 PDF BibTeX XML Cite \textit{Š. Schwabik}, Czech. Math. J. 21(96), 172--197 (1971; Zbl 0223.34007) Full Text: EuDML OpenURL
Hemminger, Robert L. Isomorphism-induced line isomorphisms on pseudographs. (English) Zbl 0223.05129 Czech. Math. J. 21(96), 672-679 (1971). MSC: 05C60 PDF BibTeX XML Cite \textit{R. L. Hemminger}, Czech. Math. J. 21(96), 672--679 (1971; Zbl 0223.05129) Full Text: EuDML OpenURL
Zelinka, Bohdan Groups and homogeneous graphs. (English) Zbl 0223.05112 Czech. Math. J. 21(96), 653-660 (1971). MSC: 05C25 PDF BibTeX XML Cite \textit{B. Zelinka}, Czech. Math. J. 21(96), 653--660 (1971; Zbl 0223.05112) Full Text: EuDML OpenURL
Zelinka, Bohdan The group of autotopies of a digraph. (English) Zbl 0223.05111 Czech. Math. J. 21(96), 619-624 (1971). MSC: 05C25 PDF BibTeX XML Cite \textit{B. Zelinka}, Czech. Math. J. 21(96), 619--624 (1971; Zbl 0223.05111) Full Text: EuDML OpenURL
Gentry, Karl R.; Hoyle, Hughes B. III Somewhat continuous functions. (English) Zbl 0222.54010 Czech. Math. J. 21(96), 5-12 (1971). MSC: 54C08 54C10 PDF BibTeX XML Cite \textit{K. R. Gentry} and \textit{H. B. Hoyle III}, Czech. Math. J. 21(96), 5--12 (1971; Zbl 0222.54010) Full Text: EuDML OpenURL
Prasad, Jagdish Remarks on a theorem of P. K. Suetin. (English) Zbl 0222.42010 Czech. Math. J. 21(96), 349-354 (1971). MSC: 42A20 26A16 PDF BibTeX XML Cite \textit{J. Prasad}, Czech. Math. J. 21(96), 349--354 (1971; Zbl 0222.42010) Full Text: EuDML OpenURL
Kurzweil, Jaroslav; Novák, Břetislav Professor Vojtěch Jarník died. (German) Zbl 0222.01019 Czech. Math. J. 21(96), 493-524 (1971). MSC: 01A70 PDF BibTeX XML Cite \textit{J. Kurzweil} and \textit{B. Novák}, Czech. Math. J. 21(96), 493--524 (1971; Zbl 0222.01019) Full Text: EuDML OpenURL
Vanžura, Jiři Tensor-invariants of submanifolds. (English) Zbl 0221.53030 Czech. Math. J. 21(96), 437-448 (1971). MSC: 53B25 53A55 53C40 PDF BibTeX XML Cite \textit{J. Vanžura}, Czech. Math. J. 21(96), 437--448 (1971; Zbl 0221.53030) OpenURL
Krejzlik, Jaroslav Deformations of plane pseudocongruences with projective connection. (English) Zbl 0221.53026 Czech. Math. J. 21(96), 213-233 (1971). MSC: 53B10 PDF BibTeX XML Cite \textit{J. Krejzlik}, Czech. Math. J. 21(96), 213--233 (1971; Zbl 0221.53026) Full Text: EuDML OpenURL
Lambert, Howard B. On unisolvent systems. (English) Zbl 0221.41006 Czech. Math. J. 21(96), 364-365 (1971). MSC: 41A05 41A20 PDF BibTeX XML Cite \textit{H. B. Lambert}, Czech. Math. J. 21(96), 364--365 (1971; Zbl 0221.41006) Full Text: EuDML OpenURL
Preiss, David Approximate derivatives and Baire classes. (English) Zbl 0221.26007 Czech. Math. J. 21(96), 373-382 (1971). MSC: 26A21 PDF BibTeX XML Cite \textit{D. Preiss}, Czech. Math. J. 21(96), 373--382 (1971; Zbl 0221.26007) Full Text: EuDML OpenURL
Preiss, David Limits of approximately continuous functions. (English) Zbl 0221.26005 Czech. Math. J. 21(96), 371-372 (1971). MSC: 26A15 26A21 PDF BibTeX XML Cite \textit{D. Preiss}, Czech. Math. J. 21(96), 371--372 (1971; Zbl 0221.26005) Full Text: EuDML OpenURL
Chvátal, Václav Some relations among invariants of graphs. (English) Zbl 0221.05073 Czech. Math. J. 21(96), 366-368 (1971). MSC: 05C40 05C15 PDF BibTeX XML Cite \textit{V. Chvátal}, Czech. Math. J. 21(96), 366--368 (1971; Zbl 0221.05073) Full Text: EuDML OpenURL
Chartrand, Gary; Lick, Don R. Randomly Eulerian digraphs. (English) Zbl 0221.05066 Czech. Math. J. 21(96), 424-430 (1971). MSC: 05C20 05C45 05C80 PDF BibTeX XML Cite \textit{G. Chartrand} and \textit{D. R. Lick}, Czech. Math. J. 21(96), 424--430 (1971; Zbl 0221.05066) Full Text: EuDML OpenURL
Havel, V. Near domains as linear pseudo ternaries. (English) Zbl 0219.50024 Czech. Math. J. 21(96), 344-347 (1971). MSC: 51A40 51J20 PDF BibTeX XML Cite \textit{V. Havel}, Czech. Math. J. 21(96), 344--347 (1971; Zbl 0219.50024) Full Text: EuDML OpenURL
Smítal, J. On approximation of Baire functions by Darboux functions. (English) Zbl 0219.26005 Czech. Math. J. 21(96), 418-423 (1971). MSC: 26A21 54C50 PDF BibTeX XML Cite \textit{J. Smítal}, Czech. Math. J. 21(96), 418--423 (1971; Zbl 0219.26005) Full Text: EuDML OpenURL
Lipiński, J. S.; Šalát, T. On the points of quasicontinuity and cliquishness of functions. (English) Zbl 0219.26004 Czech. Math. J. 21(96), 484-489 (1971). MSC: 26A15 PDF BibTeX XML Cite \textit{J. S. Lipiński} and \textit{T. Šalát}, Czech. Math. J. 21(96), 484--489 (1971; Zbl 0219.26004) Full Text: EuDML OpenURL
Fletcher, P.; Naimpally, S. A. On almost complete and almost precompact quasi-uniform spaces. (English) Zbl 0218.54019 Czech. Math. J. 21(96), 383-390 (1971). MSC: 54E15 PDF BibTeX XML Cite \textit{P. Fletcher} and \textit{S. A. Naimpally}, Czech. Math. J. 21(96), 383--390 (1971; Zbl 0218.54019) Full Text: EuDML OpenURL
Zizler, V. Note on separation of convex sets. (English) Zbl 0218.46018 Czech. Math. J. 21(96), 340-343 (1971). MSC: 46B20 46B25 46A55 PDF BibTeX XML Cite \textit{V. Zizler}, Czech. Math. J. 21(96), 340--343 (1971; Zbl 0218.46018) Full Text: EuDML OpenURL
Zelinka, B. Homogeneous digraphs. (English) Zbl 0218.05060 Czech. Math. J. 21(96), 280-290 (1971). MSC: 05C20 05C40 PDF BibTeX XML Cite \textit{B. Zelinka}, Czech. Math. J. 21(96), 280--290 (1971; Zbl 0218.05060) Full Text: EuDML OpenURL
Rektorys, K. On application of direct variational methods to the solution of parabolic boundary value problems of arbitrary order in the space variables. (English) Zbl 0217.41601 Czech. Math. J. 21(96), 318-339 (1971). MSC: 35K35 35A15 PDF BibTeX XML Cite \textit{K. Rektorys}, Czech. Math. J. 21(96), 318--339 (1971; Zbl 0217.41601) Full Text: EuDML OpenURL
Lipiński, J. S. Über eine Frage von Herrn L. Mišík. (German) Zbl 0217.37203 Czech. Math. J. 21(96), 234-235 (1971). MSC: 26A15 PDF BibTeX XML Cite \textit{J. S. Lipiński}, Czech. Math. J. 21(96), 234--235 (1971; Zbl 0217.37203) Full Text: EuDML OpenURL
Ponděliček, B. A certain equivalence on a semigroup. (English) Zbl 0217.36404 Czech. Math. J. 21(96), 109-117 (1971). MSC: 20M99 PDF BibTeX XML Cite \textit{B. Ponděliček}, Czech. Math. J. 21(96), 109--117 (1971; Zbl 0217.36404) Full Text: EuDML OpenURL
Novák, B. Über eine Methode der \(\Omega\)-Abschätzungen. (German) Zbl 0217.32302 Czech. Math. J. 21(96), 257-279 (1971). MSC: 11P21 PDF BibTeX XML Cite \textit{B. Novák}, Czech. Math. J. 21(96), 257--279 (1971; Zbl 0217.32302) Full Text: EuDML OpenURL
In memoriam Professor RNDr. Josef Bilý, CSc. (English) Zbl 0217.30001 Czech. Math. J. 21(96), 348 (1971). MSC: 01A70 PDF BibTeX XML Cite Czech. Math. J. 21(96), 348 (1971; Zbl 0217.30001) Full Text: EuDML OpenURL
Ponděliček, B. Contribution to the foundations of network theory using the distribution theory. II. (English) Zbl 0217.16703 Czech. Math. J. 21(96), 35-45 (1971). MSC: 46F05 46F10 PDF BibTeX XML Cite \textit{B. Ponděliček}, Czech. Math. J. 21(96), 35--45 (1971; Zbl 0217.16703) Full Text: EuDML OpenURL
Havlíček, Karel; Tietze, J. Zur Geometrie der endlichen Ebene der Ordnung \(n=4\). (German) Zbl 0216.43001 Czech. Math. J. 21(96), 157-164 (1971). MSC: 51E20 51E15 PDF BibTeX XML Cite \textit{K. Havlíček} and \textit{J. Tietze}, Czech. Math. J. 21(96), 157--164 (1971; Zbl 0216.43001) Full Text: EuDML OpenURL
Kolář, I. Complex velocities on real manifolds. (English) Zbl 0216.20501 Czech. Math. J. 21(96), 118-123 (1971). MSC: 58A99 PDF BibTeX XML Cite \textit{I. Kolář}, Czech. Math. J. 21(96), 118--123 (1971; Zbl 0216.20501) Full Text: EuDML OpenURL
Kolář, I. On the torsion of spaces with connection. (English) Zbl 0216.18501 Czech. Math. J. 21(96), 124-136 (1971). MSC: 53C07 PDF BibTeX XML Cite \textit{I. Kolář}, Czech. Math. J. 21(96), 124--136 (1971; Zbl 0216.18501) Full Text: EuDML OpenURL
Szybiak, A. Center-projective connections. (English) Zbl 0215.51101 Czech. Math. J. 21(96), 99-108 (1971). MSC: 53B10 PDF BibTeX XML Cite \textit{A. Szybiak}, Czech. Math. J. 21(96), 99--108 (1971; Zbl 0215.51101) Full Text: EuDML OpenURL
Boček, Leo Untermannigfaltigkeiten von homogenen Räumen. (German) Zbl 0213.48701 Czech. Math. J. 21(96), 1-4 (1971). MSC: 53C40 53C30 PDF BibTeX XML Cite \textit{L. Boček}, Czech. Math. J. 21(96), 1--4 (1971; Zbl 0213.48701) Full Text: EuDML OpenURL
Kowalski, O. Immersions of Riemannian manifolds with a given normal bundle structure. II. (English) Zbl 0213.48601 Czech. Math. J. 21(96), 137-156 (1971). MSC: 53C42 PDF BibTeX XML Cite \textit{O. Kowalski}, Czech. Math. J. 21(96), 137--156 (1971; Zbl 0213.48601) Full Text: EuDML OpenURL
Král, Josef; Lukeš, Jaroslav On the modified logarithmic potential. (English) Zbl 0213.38301 Czech. Math. J. 21(96), 76-98 (1971). MSC: 31A15 PDF BibTeX XML Cite \textit{J. Král} and \textit{J. Lukeš}, Czech. Math. J. 21(96), 76--98 (1971; Zbl 0213.38301) Full Text: EuDML OpenURL
Hoyle, H. B. III Function spaces for somewhat continuous functions. (English) Zbl 0212.55002 Czech. Math. J. 21(96), 31-34 (1971). MSC: 54C35 54C08 PDF BibTeX XML Cite \textit{H. B. Hoyle III}, Czech. Math. J. 21(96), 31--34 (1971; Zbl 0212.55002) Full Text: EuDML OpenURL
Vaisman, Izu Variétés riemanniennes feuilletées. (French) Zbl 0212.54202 Czech. Math. J. 21(96), 46-75 (1971). MSC: 53C12 PDF BibTeX XML Cite \textit{I. Vaisman}, Czech. Math. J. 21(96), 46--75 (1971; Zbl 0212.54202) Full Text: EuDML OpenURL
Schweiger, Fritz Addendum zu ’Ergodische Theorie der Engelschen und Sylvesterschen Reihen’ (revidierte Fassung). (German) Zbl 0212.41403 Czech. Math. J. 21(96), 165 (1971). MSC: 40A99 PDF BibTeX XML Cite \textit{F. Schweiger}, Czech. Math. J. 21(96), 165 (1971; Zbl 0212.41403) Full Text: EuDML OpenURL