The geometry of non-linear differential equations, Bäcklund transformations, and solitons, part A/
Robert Hermann.
- Brookline, Mass.: Math Sci Press, c1976.
- 313 p. ; 21 cm.
- Interdisciplinary mathematics ; v. 12 .
- Hermann, Robert, 1931- v. 12. .
- Interdisciplinary mathematics; 12. .