Gröbner, Wolfgang Recenti risultati ed applicazioni delle serie di Lie. (Italian) Zbl 0138.32203 Univ. Politec. Torino, Rend. Sem. Mat. 24 (1964/65), 31-40 (1965). PDFBibTeX XML
Corduneanu, C. Sur les inégalités différentielles. (French) Zbl 0138.32202 Mathematica, Cluj 6(29)(1964), 31-33 (1965). PDFBibTeX XMLCite \textit{C. Corduneanu}, Mathematica, Cluj 6(29), 31--33 (1965; Zbl 0138.32202)
Zolotarev, Yu. G. Der periodische Teil eines Integrals. (Russian) Zbl 0138.32201 Issled. Differ. Uravn. Primen. 1965, 33-41 (1965). PDFBibTeX XML
Filippov, A. F. Differential equations with discontinuous right-hand side. (Russian) Zbl 0138.32204 Mat. Sb., N. Ser. 51(93), 99-128 (1960). MSC: 34A36 PDFBibTeX XMLCite \textit{A. F. Filippov}, Mat. Sb., Nov. Ser. 51(93), 99--128 (1960; Zbl 0138.32204)