@article{NSJOM_1986_16_1a_12,
     author = {{\CYRYA}{\cyra}{\cyrn}{\cyre}{\cyrz} 

 {\CYRU}{\cyrsh}{\cyra}{\cyrn}},
     title = {{\CYRA}tm {\cyri} 

 {At-3} -{\cyrk}{\cyrv}{\cyra}{\cyrz}{\cyri}{\cyrg}{\cyrr}{\cyru}{\cyrp}{\cyrp}{\cyrery}},
     journal = {Novi Sad Journal of Mathematics},
     pages = {143-159},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {1986},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1986_16_1a_12/}
}