@article{PIM_1979_N_S_26_40_a38,
     author = {{\CYRR}{\cyra}{\cyrd}{\cyre} {\CYRZH}{\cyri}{\cyrv}{\cyra}{\cyrl}{\cyre}{\cyrv}{\cyri}{\cyrch}},
     title = {md {H=md} {H}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {307 },
     publisher = {mathdoc},
     volume = {_N_S_26},
     number = {40},
     year = {1979},
     url = {http://geodesic.mathdoc.fr/item/PIM_1979_N_S_26_40_a38/}
}