@article{ND_2006_2_4_a6,
     author = {M. P. Kharlamov},
     title = {Generalized 4th {Appelrot} class: region of existence of motions and separation of variables},
     journal = {Russian journal of nonlinear dynamics},
     pages = {453--472},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ND_2006_2_4_a6/}
}