@article{DAN_1962_142_6_a7,
     author = {L. M\'at\'e},
     title = {On the semigroup of operators in a {Fr\'echet} space},
     journal = {Doklady Akademii Nauk},
     pages = {1247--1250},
     publisher = {mathdoc},
     volume = {142},
     number = {6},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_142_6_a7/}
}