@article{FAA_1997_31_3_a13,
     author = {V. S. Shulman},
     title = {Factorization of {Completely} {Positive} {Cocycles} and the {GNS} {Construction} of {Representations} in {Pontryagin} {Spaces}},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {91--94},
     publisher = {mathdoc},
     volume = {31},
     number = {3},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1997_31_3_a13/}
}