@article{VMJ_2015_17_2_a7,
     author = {Ya. N. Nuzhin and T. A. Osetrova},
     title = {On overgroups of the unipotent subgroup of the {Chevalley} group of rank~2 over a~field},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {56--61},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2015_17_2_a7/}
}