@article{DAN_1970_195_6_a4,
     author = {V. N. Logvinenko and I. V. Ostrovskii and L. I. Ronkin},
     title = {Analytic transformations of a normal vector},
     journal = {Doklady Akademii Nauk},
     pages = {1270--1273},
     publisher = {mathdoc},
     volume = {195},
     number = {6},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_195_6_a4/}
}