edited by A. J. Fossard, D. Normand-Cyrot ; [English language translation revised by M. B. Groen-Garrer]. -- Chapman & Hall, 1996. -- (Nonlinear systems / edited by A. J. Fossard, D. Normand-Cyrot ; [English language translation revised by M. B. Groen-Garrer] ; [v.] 2).