@article{DAN_1983_270_1_a0,
     author = {Ya. I. Al'ber},
     title = {Recurrence relations and variational inequalities},
     journal = {Doklady Akademii Nauk},
     pages = {11--17},
     publisher = {mathdoc},
     volume = {270},
     number = {1},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1983_270_1_a0/}
}