Interdisciplinary Workshop on Nonlinear Coherent Structures in Physics, Mechanics, and Biological Systems )6th: 9891: Montpellier, France(
Nonlinear coherent structures : proceedings of the 6th Interdisciplinary Workshop on Nonlinear Coherent Structures in Physics, Mechanics, and Biological Systems, held at Montpellier, France, June 21-23, 1989