@article{DAN_1987_296_3_a4,
     author = {V. P. Modenov},
     title = {A differential-parametric method},
     journal = {Doklady Akademii Nauk},
     pages = {536--538},
     publisher = {mathdoc},
     volume = {296},
     number = {3},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_296_3_a4/}
}