@article{AL_1990_29_3_a3,
     author = {V. M. Levchuk},
     title = {Automorphisms of unipotent subgroups of {Chevalley} groups},
     journal = {Algebra i logika},
     pages = {315--338},
     publisher = {mathdoc},
     volume = {29},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1990_29_3_a3/}
}