@article{MZM_1986_39_6_a0,
     author = {Zh. S. Satarov},
     title = {Defining relations in an elementary triangular group over rings},
     journal = {Matemati\v{c}eskie zametki},
     pages = {785--790},
     publisher = {mathdoc},
     volume = {39},
     number = {6},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1986_39_6_a0/}
}