@article{PFMT_2022_2_a14,
     author = {A. P. Starovoitov and A. D. Kovalkova},
     title = {On polyorthogonal functions of the first type},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {94--98},
     publisher = {mathdoc},
     number = {2},
     year = {2022},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2022_2_a14/}
}