@article{ZNSL_2017_456_a9,
     author = {V. A. Kostin and M. N. Nebol'sina},
     title = {To the theory of the $C_0$-operator orthogonal polynomials},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {125--134},
     publisher = {mathdoc},
     volume = {456},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2017_456_a9/}
}