@article{NANO_2013_4_5_a6,
     author = {D. S. Yasyrkina and S. V. Kuznetsov and A. V. Ryabova and D. V. Pominova and V. V. Voronov and R. P. Ermakov and P. P. Fedorov},
     title = {Dependence of quantum yield of up-conversion luminescence on the composition of fluorite-type solid solution {NaY}$_{1-x-y}${Yb}$_{x}${Er}$_{y}${F}$_{4}$},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {648--656},
     publisher = {mathdoc},
     volume = {4},
     number = {5},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2013_4_5_a6/}
}