@article{ZNSL_2015_433_a12,
     author = {M. A. Sokolov},
     title = {Generating functions of {Chebyshev} polynomials in three variables},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {246--259},
     year = {2015},
     volume = {433},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2015_433_a12/}
}