@article{KYB_1994_30_5_a1,
     author = {Bourdache-Siguerdidjane, Houria},
     title = {On the characteristic modes of a rigid body under forces},
     journal = {Kybernetika},
     pages = {489--497},
     year = {1994},
     volume = {30},
     number = {5},
     mrnumber = {1314344},
     zbl = {0828.70019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1994_30_5_a1/}
}