@article{DAN_1968_179_6_a6,
     author = {A. I. Loginov},
     title = {Commutative symmetric {Banach} algebras of operators in the {Pontrjagin} space $\Pi_1$},
     journal = {Doklady Akademii Nauk},
     pages = {1276--1278},
     publisher = {mathdoc},
     volume = {179},
     number = {6},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_179_6_a6/}
}