@article{MO_2018_1_a3,
     author = {M. A. Tleubergenova},
     title = {Equilateral triangle helps to solve a problem},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {33--37},
     year = {2018},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2018_1_a3/}
}