@article{DAN_1987_296_1_a3,
     author = {O. A. Liskovets},
     title = {External approximations for the regularization of monotone},
     journal = {Doklady Akademii Nauk},
     pages = {21--25},
     publisher = {mathdoc},
     volume = {296},
     number = {1},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_296_1_a3/}
}