@article{DAN_1979_246_4_a0,
     author = {V. V. Agaronyan and Yu. M. Smirnov},
     title = {The {Ljusternik--Snirel'man} category for procategories},
     journal = {Doklady Akademii Nauk},
     pages = {777--779},
     publisher = {mathdoc},
     volume = {246},
     number = {4},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1979_246_4_a0/}
}