Geometrical approaches to differential equations : proceedings of the fourth Scheveningen Conference on Differential Equations, the Netherlands, August 26-31, 1979 /
ed. by R. Martini.
- Berlin [etc.] : Springer-Verlag, 1980.
- VII, 339 s. : il. ; 24 cm.
- Lecture Notes in Mathematics ; 810 .
- Lecture Notes in Mathematics 810 .