@article{DAN_1971_199_4_a9,
     author = {S. S. Kutateladze and A. M. Rubinov},
     title = {Supremal generators},
     journal = {Doklady Akademii Nauk},
     pages = {776--777},
     publisher = {mathdoc},
     volume = {199},
     number = {4},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_199_4_a9/}
}