@article{DAN_1961_137_5_a15,
     author = {A. I. Sirota},
     title = {Simple subgroups of simply connected real simple {Lie} groups},
     journal = {Doklady Akademii Nauk},
     pages = {1063--1066},
     publisher = {mathdoc},
     volume = {137},
     number = {5},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_137_5_a15/}
}