@article{MEM_2012_41_1_a1,
     author = {{\CYRP}{\cyro}{\cyrp}{\cyri}{\cyrv}{\cyra}{\cyrn}{\cyro}{\cyrv}, {\CYRP}{\cyre}{\cyrt}{\cyrhrdsn}{\cyrr}},
     title = {{\CYRR}{\cyra}{\cyrz}{\cyrp}{\cyrr}{\cyre}{\cyrd}{\cyre}{\cyrl}{\cyre}{\cyrn}{\cyri}{\cyre} {\cyrn}{\cyra} {\cyrp}{\cyrr}{\cyro}{\cyrs}{\cyrt}{\cyri}{\cyrt}{\cyre} {\cyrch}{\cyri}{\cyrs}{\cyrl}{\cyra} {\cyri} {\cyrn}{\cyrya}{\cyrk}{\cyro}{\cyri} {\cyrp}{\cyrr}{\cyri}{\cyrl}{\cyro}{\cyrzh}{\cyre}{\cyrn}{\cyri}{\cyrya}},
     journal = {Mathematics and Education in Mathematics},
     pages = {61--69},
     publisher = {mathdoc},
     volume = {41},
     number = {1},
     year = {2012},
     language = {bg},
     url = {http://geodesic.mathdoc.fr/item/MEM_2012_41_1_a1/}
}