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Hermann, Robert.
The geometry of non-linear differential equations, Bäcklund transformations, and solitons / Robert Hermann.
— Brookline, Ma. : Math Sci Press, c1976. 313 p. ; 21 cm. — (Interdisciplinary mathematics ; v. 12)
Bibliografía: pt. 1, p. 305-306.
ISBN 0915692163
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