@article{DAN_1961_138_4_a0,
     author = {N. I. Akhiezer and Yu. Ya. Tomchuk},
     title = {On the theory of orthogonal polynomials over several intervals},
     journal = {Doklady Akademii Nauk},
     pages = {743--746},
     year = {1961},
     volume = {138},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_4_a0/}
}