@article{MO_2007_2_a7,
     author = {B. R. Frenkin},
     title = {A {Geometric} {Approach} to the {Indication} of {Rectangular} {Tria}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {61--62},
     year = {2007},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2007_2_a7/}
}