@article{DAN_1990_310_1_a19,
     author = {L. N. Kaplunnik and I. V. Petrova and E. A. Pobedimskaya and V. M. Kachalovskaya and B. S. Osipov},
     title = {Crystal structure of natural alkaline sulfide, chvilevaite, $\mathrm{Na}(\mathrm{Cu},\mathrm{Fe},\mathrm{Zn})_2\mathrm{S}_2$},
     journal = {Doklady Akademii Nauk},
     pages = {90--93},
     publisher = {mathdoc},
     volume = {310},
     number = {1},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_310_1_a19/}
}