@article{MS_1945__59_1_a0,
     author = {{\CYRZH}. {\CYRA}{\cyrd}{\cyra}{\cyrm}{\cyra}{\cyrr}},
     title = {On problems of difficult apparent},
     journal = {Matemati\v{c}eskij sbornik},
     pages = {3--8},
     publisher = {mathdoc},
     volume = {59},
     number = {1},
     year = {1945},
     zbl = {0063.01846},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/MS_1945__59_1_a0/}
}