@article{IM2_1967_1_2_a14,
     author = {A. I. Kostrikin},
     title = {Squares of adjoint endomorphisms in simple {Lie} $p$-algebras},
     journal = {Izvestiya. Mathematics},
     pages = {435--473},
     year = {1967},
     volume = {1},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1967_1_2_a14/}
}