@article{TRSPY_1976_142_a12,
     author = {K. K. Mardzhanishvili},
     title = {A~singular series},
     journal = {Informatics and Automation},
     pages = {174--181},
     publisher = {mathdoc},
     volume = {142},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1976_142_a12/}
}