@article{DAN_1971_197_3_a16,
     author = {G. M. Bartenev and A. Z. Barisov and V. I. Gol'danskiǐ and M. N. Pletnev and E. P. Prokop{\textquoteright}ev and A. D. Tsyganov},
     title = {Atom of positronium in oxide semiconductors with developed surface},
     journal = {Doklady Akademii Nauk},
     pages = {560--563},
     publisher = {mathdoc},
     volume = {197},
     number = {3},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_197_3_a16/}
}