@article{DAN_1960_135_2_a3,
     author = {M. A. Krasnosel'skii},
     title = {Regular and perfectly regular cones},
     journal = {Doklady Akademii Nauk},
     pages = {255--257},
     publisher = {mathdoc},
     volume = {135},
     number = {2},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_135_2_a3/}
}