@article{GDZPPN002202050,
title = {Singular fibres of the momentum mapping for integrable Hamiltonian systems.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {346},
year = {1984},
pages = {67-107},
zbl = {0542.58005},
url = {http://dml.mathdoc.fr/item/GDZPPN002202050}
}
Knörrer, Horst. Singular fibres of the momentum mapping for integrable Hamiltonian systems.. Journal für die reine und angewandte Mathematik, Tome 346 (1984) pp. 67-107. http://gdmltest.u-ga.fr/item/GDZPPN002202050/