@article{ZNSL_1977_67_a7,
     author = {V. A. Dem'yanenko},
     title = {An indeterminate equation},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {163--166},
     publisher = {mathdoc},
     volume = {67},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1977_67_a7/}
}