@article{SM_1971_15_1_a2,
     author = {V. M. Adamyan and D. Z. Arov and M. G. Krein},
     title = {Analytic properties of {Schmidt} pairs for {a~Hankel} operator and the generalized {Schur--Takagi} problem},
     journal = {Sbornik. Mathematics},
     pages = {31--73},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1971_15_1_a2/}
}