On the degree of regularity of surfaces formed by the asymptotic integrals of differential equations

Instytut Matematyczny Polskiej Akademii Nauk / Institute of Mathematics / Publishing house / Journals and Serials / Annales Polonici Mathematici / All issues

Zofia Szmydt Annales Polonici Mathematici 2 (1955), 294-313 DOI: 10.4064/ap-2-2-294-313