Ranada, A.F (ed) <br/><br/>
Nonlinear problems in theoretical physics  proceedings of the ix G.I.F.T. International seminar on theoretical physics, held at jaca huesca, spain, june 1978 
Ed by A.F. Ranada 
 - Berlin  Springer  1979 
 - x  216 
 - Lecture notes in physics 98 .
<br/><br/><label>ISBN: </label>3540092463 
<br/><br/><label>Dewey Class. No.: </label>13.01+6.06+22  / RANA