R. Martini
Geometrical Approaches to Differential Equations - 1980 - Heidelberg Springer Berlin 1980 - Proceedings - Lecture Notes in Mathematics v.810 .
9783540381662
Mathematics and Statistics
Geometrical Approaches to Differential Equations - 1980 - Heidelberg Springer Berlin 1980 - Proceedings - Lecture Notes in Mathematics v.810 .
9783540381662
Mathematics and Statistics