@article{IM2_1986_27_2_a8,
     author = {A. S. Dzhumadil'daev},
     title = {Generalized {Casimir} elements},
     journal = {Izvestiya. Mathematics},
     pages = {391--400},
     year = {1986},
     volume = {27},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1986_27_2_a8/}
}