@article{DAN_1977_232_3_a18,
     author = {L. D. Kislovskii and G. R. Knubovets and G. I. Cherenkova},
     title = {Indices of tetrahedron condensation in the structure of apatite},
     journal = {Doklady Akademii Nauk},
     pages = {581--583},
     publisher = {mathdoc},
     volume = {232},
     number = {3},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_232_3_a18/}
}