@article{VMUMM_2000_4_a10,
     author = {I. V. Arzhantsev},
     title = {Uniqueness of addition in the {Lie} algebra $sl_2$},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {49--51},
     year = {2000},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2000_4_a10/}
}