The geometry of non linear differential equations, Backlund transformations and solitons : Part. B
Robert Hermann.
Brookline, MA : Math Sci Press, ©1977.
336 págs. ; cm.
Serie: Interdisciplinary Mathematics ; v. 14
ISBN: 091569218X
Título de la cubierta: Geometric Theory of Non-Linear Differential Equations, Bäcklund Transformations and Solitons : Part B.