%0 Journal Article %A A. I. Aptekarev %A S. A. Denisov %A M. L. Yattselev %T Discrete Schr\"odinger Operator on a Tree, Angelesco Potentials, and Their Perturbations %J Informatics and Automation %D 2020 %P 5-13 %V 311 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_2020_311_a0/ %G ru %F TRSPY_2020_311_a0