@article{DAN_1976_230_1_a15,
     author = {R. Vedel' and M. A. Kumakhov},
     title = {Channeling of ions at small depths},
     journal = {Doklady Akademii Nauk},
     pages = {68--70},
     publisher = {mathdoc},
     volume = {230},
     number = {1},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_230_1_a15/}
}