Non linear problems in theoretical physics : proceedings of the IX G.I.F.T. International Seminar on Theoretical Physics, held at Jaca, Huesca (Spain), Jun 1978 - International Seminar on Theoretical Physics 1978 : Jaca); Ranada, A.F., 1939-; Grupo Interuniversitario de Fisica Teorica (Berlin : Springer-Verlag, 1979)
Includes bibliographical references
Keywords: Nonlinear theories -- Congresses; Mathematical physics -- Congresses