Buttazzo, G.. Calculus of variations and partial differential equations : topics on geometrical evolution problems and degree theory / edited by G. Buttazzo; A. Marino; M.K.V. Murthy. - New York : Springer-Verlag , 1999 - vii, 347p : ISBN: 3-540-64803-8 Subjects--Topical Terms: Topological degree Dewey Class. No.: B32 / N9