@article{1183534664,
author = {Marsden, J.},
title = {The Hopf bifurcation for nonlinear semigroups},
journal = {Bull. Amer. Math. Soc.},
volume = {79},
number = {5},
year = {1973},
pages = { 537-541},
language = {en},
url = {http://dml.mathdoc.fr/item/1183534664}
}
Marsden, J. The Hopf bifurcation for nonlinear semigroups. Bull. Amer. Math. Soc., Tome 79 (1973) no. 5, pp. 537-541. http://gdmltest.u-ga.fr/item/1183534664/