L. P. Cherenkova, “The construction of the switching line in the case of an isochronous family of glued solutions”, Differ. Uravn., 7:11 (1971), 2117–2119
2.
L. P. Cherenkova, “The simultaneity of systems of two differential equations”, Differ. Uravn., 7:9 (1971), 1723–1726
Contact us: