@article{NSJOM_1987_17_1a_22,
     author = {{\CYRYA}{\cyra}{\cyrn}{\cyre}{\cyrz} 

 {\CYRU}{\cyrsh}{\cyra}{\cyrn}},
     title = {{\CYRO} 

 {\cyro}{\cyrd}{\cyrn}{\cyro}{\cyrm} {\cyrk}{\cyrl}{\cyra}{\cyrs}{\cyrs}{\cyre} {{\CYRA}tm} 

 {\textendash}3-{\cyrk}{\cyrv}{\cyra}{\cyrz}{\cyri}{\cyrg}{\cyrr}{\cyru}{\cyrp}{\cyrp}},
     journal = {Novi Sad Journal of Mathematics},
     pages = {291-301},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {1987},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1987_17_1a_22/}
}