@article{SM_2002_193_10_a5,
     author = {P. V. Morozov},
     title = {The {Liouville} classification of integrable systems of the {Clebsch} case},
     journal = {Sbornik. Mathematics},
     pages = {1507--1533},
     publisher = {mathdoc},
     volume = {193},
     number = {10},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2002_193_10_a5/}
}