Karkinbaev, I.; Perestyuk, N. A. The application of the asymptotic Krylov-Bogolyubov method to the investigation of systems with the impulse effect. (Ukrainian) Zbl 0509.34058 Mathematics, mechanics, 20, Vestn. Kiev. Univ., Kiev 1978, 51-59 (1978). MSC: 34E05 PDFBibTeX XML
Toda, Morikazu Nonlinear lattice dynamics. (Japanese) Zbl 0502.70013 Tokyo: Iwanami Shoten, Publishers. xi, 195 p. (1978). MSC: 70F99 70-02 37L60 70K99 65Z05 70G10 PDFBibTeX XML
Shovkoplyas, V. N. Periodic solutions of nonlinear second order differential equations with the impulse effect. (Ukrainian) Zbl 0487.34034 Mathematics, mechanics 20, Vestn. Kiev. Univ., Kiev 1978, 131-140 (1978). MSC: 34C25 34A34 PDFBibTeX XML
Vyazemskij, V. O. Intensity of flow of points of crossing of a threshold by a random impulse process. (English. Russian original) Zbl 0448.93051 Eng. Cybern. 16, No. 5, 155-158 (1978); translation from Izv. Akad. Nauk SSSR, Tekh. Kibern. 1978, No. 5, 206-209 (1978). MSC: 93E03 94A99 PDFBibTeX XMLCite \textit{V. O. Vyazemskij}, Eng. Cybern. 16, No. 5, 155--158 (1978; Zbl 0448.93051); translation from Izv. Akad. Nauk SSSR, Tekh. Kibern. 1978, No. 5, 206--209 (1978)
Kamal, A. K.; Singh, Harpreet; Bedi, J. S. An algorithm for the realization of time varying linear sequential circuits from the given impulse response matrix over GF(2). (English) Zbl 0445.94025 Circuit theory and design, Proc. Eur. Conf., Lausanne 1978, 289-294 (1978). MSC: 94C05 93B15 PDFBibTeX XML
Chernous’ko, F. L.; Melikyan, A. A. Game-theoretical control and search problems. (Igrovye zadachi upravleniya i poiska.). (Russian) Zbl 0443.90113 Akademiya Nauk SSSR, Institut Problem Mekhaniki. Moskva: Izdatel’stvo “Nauka”. 270 p. R. 1.90 (1978). MSC: 91A23 90-02 91A05 91A24 91A99 PDFBibTeX XML
Marinescu, C.; Marinescu, E. A problem of impulse differential equations. (Romanian) Zbl 0439.34014 Bul. Univ. Brasov, Ser. C 20, 83-86 (1978). MSC: 34A99 PDFBibTeX XMLCite \textit{C. Marinescu} and \textit{E. Marinescu}, Bul. Univ. Brașov, Ser. C 20, 83--86 (1978; Zbl 0439.34014)
Saha, Susama Capillary waves due to a local surface impulse. (English) Zbl 0437.76015 Indian J. Mech. Math. 16, No. 1, 28-34 (1978). MSC: 76B15 PDFBibTeX XMLCite \textit{S. Saha}, Indian J. Mech. Math. 16, No. 1, 28--34 (1978; Zbl 0437.76015)
Saraswati, Dipak K.; Primas, H. A system theoretic representation of mechanical systems. II: Stochastic interpretation. (English) Zbl 0437.70013 J. Math. Phys. 19, 2655-2658 (1978). MSC: 70G10 70G99 47E05 34A12 PDFBibTeX XMLCite \textit{D. K. Saraswati} and \textit{H. Primas}, J. Math. Phys. 19, 2655--2658 (1978; Zbl 0437.70013) Full Text: DOI
Antonets, M. A. The scattering problem in classical mechanics. (English) Zbl 0437.70012 Funct. Anal. Appl. 12, 131-132 (1978). MSC: 70G10 70H05 35B37 PDFBibTeX XMLCite \textit{M. A. Antonets}, Funct. Anal. Appl. 12, 131--132 (1978; Zbl 0437.70012) Full Text: DOI
Perelomov, A. M. The simple relation between certain dynamical systems. (English) Zbl 0435.70013 Commun. Math. Phys. 63, 9-11 (1978). MSC: 70H05 37J99 70G10 PDFBibTeX XMLCite \textit{A. M. Perelomov}, Commun. Math. Phys. 63, 9--11 (1978; Zbl 0435.70013) Full Text: DOI
Uzes, C. A. Mechanical response and the initial value problem. (English) Zbl 0434.70019 J. Math. Phys. 19, 2232-2238 (1978). MSC: 70G10 70H05 37J99 PDFBibTeX XMLCite \textit{C. A. Uzes}, J. Math. Phys. 19, 2232--2238 (1978; Zbl 0434.70019) Full Text: DOI
Kobussen, J. A. Relation between Nambu mechanics and generalized Hamiltonian mechanics. (English) Zbl 0432.70028 Hadronic J. 1, 966-975 (1978). MSC: 70H15 70G10 PDFBibTeX XMLCite \textit{J. A. Kobussen}, Hadronic J. 1, 966--975 (1978; Zbl 0432.70028)
Saraswati, Dipak K.; Primas, H. A system theoretic representation of mechanical systems. I. Decomposition of a mechanical system into a hierarchy of orthogonal stationary linear dynamical systems. (English) Zbl 0432.70024 J. Math. Phys. 19, 2646-2654 (1978). MSC: 70G10 70G99 47E05 34A12 PDFBibTeX XMLCite \textit{D. K. Saraswati} and \textit{H. Primas}, J. Math. Phys. 19, 2646--2654 (1978; Zbl 0432.70024) Full Text: DOI
Perelomov, A. M. Equilibrium configurations and small oscillations of some dynamical systems. (English) Zbl 0427.70024 Ann. Inst. Henri Poincaré, Nouv. Sér., Sect. A 28, 407-415 (1978). MSC: 70G10 34C10 PDFBibTeX XMLCite \textit{A. M. Perelomov}, Ann. Inst. Henri Poincaré, Nouv. Sér., Sect. A 28, 407--415 (1978; Zbl 0427.70024) Full Text: Numdam EuDML
Hussain, M. An equivalence theorem in Poincaré-Cetaev variables. (English) Zbl 0425.70020 Teor. Primen. Meh. 4, 67-72 (1978). MSC: 70H20 70G10 PDFBibTeX XMLCite \textit{M. Hussain}, Teor. Primen. Meh. 4, 67--72 (1978; Zbl 0425.70020)
Wittenburg, J. Nonlinear equations of motion for arbitrary systems of interconnected rigid bodies. (English) Zbl 0425.70018 Dyn. Multibody Syst., IUTAM Symp. München 1977, 357-369 (1978). MSC: 70G10 70E99 PDFBibTeX XML
Ramu, S. Anantha; Iyengar, K. Janardhana Finite plastic deformations of orthotropic circular plates under Gaussian impulse. (English) Zbl 0424.73057 Rozpr. Inz. 26, 457-470 (1978). MSC: 74K20 74B20 PDFBibTeX XMLCite \textit{S. A. Ramu} and \textit{K. J. Iyengar}, Rozpr. Inż. 26, 457--470 (1978; Zbl 0424.73057)
Ferrero, Giorgio Sui sistemi dinamici soggeti a forze generalizzate riducibili a forma canonica. (Italian) Zbl 0422.70023 Atti Accad. Naz. Lincei, VIII. Ser., Rend., Cl. Sci. Fis. Mat. Nat. 64, 458-465 (1978). MSC: 70G10 PDFBibTeX XMLCite \textit{G. Ferrero}, Atti Accad. Naz. Lincei, VIII. Ser., Rend., Cl. Sci. Fis. Mat. Nat. 64, 458--465 (1978; Zbl 0422.70023)
Antonets, M. A. Über das Streuungsproblem in der klassischen Mechanik. (Russian) Zbl 0421.70024 Funkts. Anal. Prilozh. 12, No. 2, 68-69 (1978). MSC: 70G10 70H05 35B37 PDFBibTeX XMLCite \textit{M. A. Antonets}, Funkts. Anal. Prilozh. 12, No. 2, 68--69 (1978; Zbl 0421.70024)
Kolesnikov, N. N. Natural systems with solvable symmetry group. (English) Zbl 0421.70007 Mosc. Univ. Mech. Bull. 33, No. 5-6, 22-25 (1978). MSC: 70H03 70F20 70G10 PDFBibTeX XMLCite \textit{N. N. Kolesnikov}, Mosc. Univ. Mech. Bull. 33, No. 5--6, 22--25 (1978; Zbl 0421.70007)
Reitmann, Volker Über beschränkte und periodische Trajektorien in nichtlinearen Impulssystemen. (German) Zbl 0418.70017 Wiss. Z. Tech. Univ. Dres. 27, 355-357 (1978). MSC: 70G10 34C25 34C11 PDFBibTeX XMLCite \textit{V. Reitmann}, Wiss. Z. Tech. Univ. Dres. 27, 355--357 (1978; Zbl 0418.70017)
Wittenburg, J. Bewegungsgleichungen für beliebige Starrkörpersysteme mit Anwendungsbeispielen. (German) Zbl 0417.70005 Z. Angew. Math. Mech. 58, T130-T131 (1978). MSC: 70E99 70G10 70F25 PDFBibTeX XMLCite \textit{J. Wittenburg}, Z. Angew. Math. Mech. 58, T130--T131 (1978; Zbl 0417.70005)
Rabiner, Lawrence R.; Crochiere, Ronald E.; Allen, Jont B. FIR system modeling and identification in the presence of noise and with band-limited inputs. (English) Zbl 0415.93055 IEEE Trans. Acoust. Speech Signal Process. 26, 319-333 (1978). MSC: 93E12 93B30 PDFBibTeX XMLCite \textit{L. R. Rabiner} et al., IEEE Trans. Acoust. Speech Signal Process. 26, 319--333 (1978; Zbl 0415.93055) Full Text: DOI
Martinez, Horacio G.; Parks, Thomas W. Design of recursive digital filters with optimum magnitude and attenuation poles on the unit circle. (English) Zbl 0415.93037 IEEE Trans. Acoust. Speech Signal Process. 26, 150-156 (1978). MSC: 93E11 93C55 93E25 PDFBibTeX XMLCite \textit{H. G. Martinez} and \textit{T. W. Parks}, IEEE Trans. Acoust. Speech Signal Process. 26, 150--156 (1978; Zbl 0415.93037) Full Text: DOI
Mondal, K.; Mitra, S. K. p-normalized digital two-pairs. (English) Zbl 0414.94028 IEEE Trans. Acoust. Speech Signal Process. 26, 374-376 (1978). MSC: 94A99 94C99 93E11 PDFBibTeX XMLCite \textit{K. Mondal} and \textit{S. K. Mitra}, IEEE Trans. Acoust. Speech Signal Process. 26, 374--376 (1978; Zbl 0414.94028) Full Text: DOI
Fiorina, M.; Maffezzoni, C. Detection of impulse jumps in a noisy linear system from output observation. (English) Zbl 0413.93036 Recent theoretical developments in control, Proc. Conf., Leicester 1976, 637-664 (1978). MSC: 93C05 93C99 93B07 PDFBibTeX XML
Kortum, W.; Lehner, M.; Richter, R. Multibody systems containing active elements: Generation of linearized system equations, system analysis and order-reduction. (English) Zbl 0412.70013 Dyn. Multibody Syst., IUTAM Symp. München 1977, 158-171 (1978). MSC: 70G10 70B15 34A30 PDFBibTeX XML
Foley, M. H. A minimum mass square plate with fixed fundamental frequency of free vibration. (English) Zbl 0411.73044 AIAA J. 16, 1001-1004 (1978). MSC: 74H45 70G10 65K10 PDFBibTeX XMLCite \textit{M. H. Foley}, AIAA J. 16, 1001--1004 (1978; Zbl 0411.73044) Full Text: DOI
Tatarinov, Ya. V. Geometrical formalism of classical dynamics: natural integrals and reduction. (English) Zbl 0409.70012 Mosc. Univ. Mech. Bull. 33, No. 3-4, 26-33 (1978). MSC: 70G45 70G10 PDFBibTeX XMLCite \textit{Ya. V. Tatarinov}, Mosc. Univ. Mech. Bull. 33, No. 3--4, 26--33 (1978; Zbl 0409.70012)
Gustomesov, V. A. Simple cycles in relay-impulse systems. (English) Zbl 0409.34042 Differ. Equations 14, 588-591 (1978). MSC: 34C99 93C15 93C57 34A30 PDFBibTeX XMLCite \textit{V. A. Gustomesov}, Differ. Equations 14, 588--591 (1978; Zbl 0409.34042)
El-Attar, R. A.; Vidyasagar, M. System order reduction using the induced operator norm and its applications to linear regulators. (English) Zbl 0406.93026 J. Franklin Inst. 306, 457-474 (1978). MSC: 93C05 93B10 93B40 PDFBibTeX XMLCite \textit{R. A. El-Attar} and \textit{M. Vidyasagar}, J. Franklin Inst. 306, 457--474 (1978; Zbl 0406.93026) Full Text: DOI
Vinogradov, A. M. A spectral sequence associated with a nonlinear differential equation, and algebro-geometric foundations of Lagrangian field theory with constraints. (English. Russian original) Zbl 0406.58015 Sov.. Math., Dokl. 19, 144-148 (1978); translation from Dokl. Akad. Nauk SSSR 238, 1028-1031 (1978). MSC: 58E30 49N45 55T99 70H03 70G10 PDFBibTeX XMLCite \textit{A. M. Vinogradov}, Sov. Math., Dokl. 19, 144--148 (1978; Zbl 0406.58015); translation from Dokl. Akad. Nauk SSSR 238, 1028--1031 (1978)
Menzio, Maria Rosa; Tulczyjew, W. M. Infinitesimal symplectic relations and generalized Hamiltonian dynamics. (English) Zbl 0405.58029 Ann. Inst. Henri Poincaré, Nouv. Sér., Sect. A 28, 349-367 (1978). MSC: 37J99 53C15 70H05 70H20 70G10 PDFBibTeX XMLCite \textit{M. R. Menzio} and \textit{W. M. Tulczyjew}, Ann. Inst. Henri Poincaré, Nouv. Sér., Sect. A 28, 349--367 (1978; Zbl 0405.58029) Full Text: Numdam EuDML
Koryakin, Yu. A.; Leonov, G. A.; Reitmann, V. Konvergenz im Mittel von Phasensystemen. (German) Zbl 0404.93023 Z. angew. Math. Mech. 58, 435-441 (1978). MSC: 93C15 34A34 93C10 PDFBibTeX XMLCite \textit{Yu. A. Koryakin} et al., Z. Angew. Math. Mech. 58, 435--441 (1978; Zbl 0404.93023) Full Text: DOI
Yavin, Yaakov An impulse control policy for a class of jump diffusion processes. (English) Zbl 0402.60058 NRIMS Tech. Rep. 55, 23 p. (1978). MSC: 60H10 60J60 60J75 93E20 PDFBibTeX XML
El Mabsout, B. Espace des phases dans le problème plan des trois corps. (French) Zbl 0399.70015 J. Mec., Paris 17, 485-530 (1978). Reviewer: Sergei Georgievich Zhuravlev (Moskva) MSC: 70F07 70G10 PDFBibTeX XMLCite \textit{B. El Mabsout}, J. Méc., Paris 17, 485--530 (1978; Zbl 0399.70015)
Hagedorn, P. On non-conservative systems with ignorable coordinates. (English) Zbl 0397.70020 Arch. Ration. Mech. Anal. 68, 89-92 (1978). MSC: 70J30 70J99 70G10 PDFBibTeX XMLCite \textit{P. Hagedorn}, Arch. Ration. Mech. Anal. 68, 89--92 (1978; Zbl 0397.70020) Full Text: DOI
Gustomesov, V. A. Simple cycles in relay-impulse systems. (Russian) Zbl 0397.34058 Differ. Uravn. 14, 830-834 (1978). MSC: 34C99 93C15 93C57 PDFBibTeX XMLCite \textit{V. A. Gustomesov}, Differ. Uravn. 14, 830--834 (1978; Zbl 0397.34058)
Wojewodzki, Wieslaw; Perdzynska, Anna Determination of deflections of a viscoplastic rectangular plate under pressure impulse. (Polish) Zbl 0395.73055 Mech. Teor. Stosow. 16, 537-556 (1978). MSC: 74K20 74C99 74D99 PDFBibTeX XMLCite \textit{W. Wojewodzki} and \textit{A. Perdzynska}, Mech. Teor. Stosow. 16, 537--556 (1978; Zbl 0395.73055)
Nguen Cong T’uen Oscillations of a beam with a dynamic absorber being excited by periodic impulses. (Russian) Zbl 0395.73044 Prikl. Mekh. 14, No. 4, 137-139 (1978). MSC: 74K10 45K05 PDFBibTeX XML
Nguyen Van Khang Über die Relativbewegung ebener Mechanismen. (German) Zbl 0395.70004 Rev. Roum. Sci. Tech., Ser. Mec. Appl. 23, 311-319 (1978). MSC: 70B15 70G10 70H03 PDFBibTeX XMLCite \textit{Nguyen Van Khang}, Rev. Roum. Sci. Tech., Sér. Méc. Appl. 23, 311--319 (1978; Zbl 0395.70004)
Norman, M. Frank; Gallistel, C. R. What can one learn from a strength-duration experiment? (English) Zbl 0394.92005 J. Math. Psychol. 18, 1-24 (1978). MSC: 92B05 92Cxx 91E99 PDFBibTeX XMLCite \textit{M. F. Norman} and \textit{C. R. Gallistel}, J. Math. Psychol. 18, 1--24 (1978; Zbl 0394.92005) Full Text: DOI
Kolesnikov, N. N. Natural systems with a solvable symmetry group. (Russian) Zbl 0394.70002 Vestn. Mosk. Univ., Ser. I 1978, No. 5, 99-103 (1978). MSC: 70H03 70F20 70G10 PDFBibTeX XMLCite \textit{N. N. Kolesnikov}, Vestn. Mosk. Univ., Ser. I 1978, No. 5, 99--103 (1978; Zbl 0394.70002)
Samojlenko, A. M.; Perestyuk, N. A. Periodic solutions of weekly non-linear systems with impulse effects. (Russian) Zbl 0394.34033 Differ. Uravn. 14, 1034-1045 (1978). MSC: 34C25 34A12 34D20 PDFBibTeX XMLCite \textit{A. M. Samojlenko} and \textit{N. A. Perestyuk}, Differ. Uravn. 14, 1034--1045 (1978; Zbl 0394.34033)
Marro, Giovanni Controlli automatici. (Italian) Zbl 0393.93001 Bologna: Zanichelli. 386 p. L. 8.800 (1978). MSC: 93-01 93C15 93C05 93D15 PDFBibTeX XML
Hackeschmidt, Manfred Zur Lagrangeschen und Eulerschen Betrachtungsweise offener Systeme. (German) Zbl 0393.76002 Wiss. Z. Hochsch. Verkehrswesen Friedrich List Dres. 25, 601-608 (1978). Reviewer: E. S. R. Gopal MSC: 76A02 70G10 PDFBibTeX XMLCite \textit{M. Hackeschmidt}, Wiss. Z., Hochsch. Verkehrswesen Friedrich List Dres. 25, 601--608 (1978; Zbl 0393.76002)
Mukunda, N. Phase space methods and the Hamilton-Jacobi form of dynamics. (English) Zbl 0393.70019 Proc. Indian Acad. Sci., Sect. A 87, No. 5, 85-105 (1978). MSC: 70H20 70H15 70G10 PDFBibTeX XMLCite \textit{N. Mukunda}, Proc. Indian Acad. Sci., Sect. A 87, No. 5, 85--105 (1978; Zbl 0393.70019) Full Text: DOI
Feroe, John A. Local existence of the nerve impulse. (English) Zbl 0391.92006 Math. Biosci. 38, 259-277 (1978). MSC: 92B05 PDFBibTeX XMLCite \textit{J. A. Feroe}, Math. Biosci. 38, 259--277 (1978; Zbl 0391.92006) Full Text: DOI
Stepanishen, P. R. Evaluation of mutual radiation impedances between circular pistons by impulse response and asymptotic methods. (English) Zbl 0391.76056 J. Sound Vib. 59, 221-235 (1978). MSC: 76Q05 42B10 41A60 PDFBibTeX XMLCite \textit{P. R. Stepanishen}, J. Sound Vib. 59, 221--235 (1978; Zbl 0391.76056) Full Text: DOI
Tulczyjew, Wlodzimierz M. Simple models of Lagrangian submanifolds of symplectic manifolds. (English) Zbl 0391.70017 Univ. Politec. Torino, Rend. Sem. Mat. 35(1976-77), 97-112 (1978). MSC: 70G10 70H05 37J99 53C15 70H03 74Axx PDFBibTeX XML
Kaufman, B.; Alfriend, K. T.; Dasenbrock, R. R. Luni-solar perturbations in the extended phase space representation of the Vinti problem. (English) Zbl 0389.70016 Acta Astronaut. 5, 727-744 (1978). MSC: 70F15 70G10 70-04 PDFBibTeX XMLCite \textit{B. Kaufman} et al., Acta Astronaut. 5, 727--744 (1978; Zbl 0389.70016) Full Text: DOI
Broucke, R. On Pfaff’s equations of motion in dynamics; Applications to satellite theory. (English) Zbl 0389.70006 Celestial Mech. 18, 207-222 (1978). MSC: 70F99 70F05 70M20 70F15 70G10 01A55 70-03 PDFBibTeX XMLCite \textit{R. Broucke}, Celest. Mech. 18, 207--222 (1978; Zbl 0389.70006) Full Text: DOI
Jerkovsky, W. The transformation operator approach to multi-subsystem dynamics. III: Applications to systems of rigid bodies. (English) Zbl 0388.70016 Matrix Tensor Q. 28, 69-87 (1978). MSC: 70G10 70G45 70F20 70F25 PDFBibTeX XMLCite \textit{W. Jerkovsky}, Matrix Tensor Q. 28, 69--87 (1978; Zbl 0388.70016)
Kolerov, G. I. Quantization and global properties of manifolds. (English) Zbl 0388.58012 Ann. Inst. Henri Poincaré, Nouv. Sér., Sect. A 28, 137-154 (1978). MSC: 53D50 58A12 70G10 PDFBibTeX XMLCite \textit{G. I. Kolerov}, Ann. Inst. Henri Poincaré, Nouv. Sér., Sect. A 28, 137--154 (1978; Zbl 0388.58012) Full Text: Numdam EuDML
Jovanovic, Božidar D. Bewegungen eines Massenpunktes unter Wirkung von beliebigen Zwangsbedingungen. (German) Zbl 0385.70010 Z. angew. Math. Mech. 58, T106-T108 (1978). MSC: 70F99 70G10 35G15 PDFBibTeX XMLCite \textit{B. D. Jovanovic}, Z. Angew. Math. Mech. 58, T106--T108 (1978; Zbl 0385.70010)
Appleby, P. G. Inertial frames in classical space-time. (English) Zbl 0384.70025 Arch. Ration. Mech. Anal. 67, 337-350 (1978). MSC: 70G45 70G10 PDFBibTeX XMLCite \textit{P. G. Appleby}, Arch. Ration. Mech. Anal. 67, 337--350 (1978; Zbl 0384.70025) Full Text: DOI
Tatarinov, Ya. V. Fondements géometriques de la dynamique classique. Intégrales naturelles et réduction. (Russian) Zbl 0379.70010 Vestn. Mosk. Univ., Ser. I 1978, No. 3, 109-118 (1978). MSC: 70G45 70G10 PDFBibTeX XMLCite \textit{Ya. V. Tatarinov}, Vestn. Mosk. Univ., Ser. I 1978, No. 3, 109--118 (1978; Zbl 0379.70010)
Marchioro, C.; Pellegrinotti, A.; Pulvirenti, M. Selfadjointness of the Liouville operator for infinite classical systems. (English) Zbl 0373.47024 Commun. Math. Phys. 58, 113-129 (1978). MSC: 47F05 47B25 70G10 PDFBibTeX XMLCite \textit{C. Marchioro} et al., Commun. Math. Phys. 58, 113--129 (1978; Zbl 0373.47024) Full Text: DOI
Fusco, Giorgio Moti piani: determinazione delle funzioni M-indipendenti posizionali. (Italian) Zbl 0368.70016 Rend. Mat., VI. Ser. 10(1977), 447-476 (1978). MSC: 70G10 PDFBibTeX XMLCite \textit{G. Fusco}, Rend. Mat., VI. Ser. 10, 447--476 (1978; Zbl 0368.70016)
Rabinowitz, Paul H. Periodic solutions of Hamiltonian systems. (English) Zbl 0358.70014 Commun. Pure Appl. Math. 31, 156-184 (1978). Reviewer: Paul H. Rabinowitz MSC: 70G10 70H05 34C25 PDFBibTeX XMLCite \textit{P. H. Rabinowitz}, Commun. Pure Appl. Math. 31, 156--184 (1978; Zbl 0358.70014) Full Text: DOI