@article{DAN_1989_307_1_a13,
     author = {N. A. Ostapenko},
     title = {Penetration of a slender body with a star-shaped cross-section into an elastic half-space},
     journal = {Doklady Akademii Nauk},
     pages = {62--66},
     publisher = {mathdoc},
     volume = {307},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_307_1_a13/}
}