@article{TRSPY_1983_154_a19,
     author = {I. R. Prodanov},
     title = {An abstract approach to the algebraic notion of a~spectrum},
     journal = {Informatics and Automation},
     pages = {200--208},
     publisher = {mathdoc},
     volume = {154},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1983_154_a19/}
}