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@article{IVM_1982_9_a2, author = {B. A. Ivanov}, title = {Spectral properties of positive operator-valued functions}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {12--16}, publisher = {mathdoc}, number = {9}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1982_9_a2/} }
B. A. Ivanov. Spectral properties of positive operator-valued functions. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1982), pp. 12-16. http://geodesic.mathdoc.fr/item/IVM_1982_9_a2/