TY  - BOOK
T1  - Differential equations: geometry theory
T2  - Dover books on advanced mathematics
A1  - Lefschetz, Solomon
LA  - English
PP  - New York
PB  - Dover
YR  - 1977
ED  - 2nd. ed.
UL  - https://colectivo.uloyola.es/Record/L4078
OP  - 390
SN  - 0486634639
KW  - Geometría
KW  - Ecuaciones diferenciales
ER  -