@article{MO_2019_3_a0,
     author = {V. B. Drozdov},
     title = {Triangle and biquadratic equation},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {2--6},
     year = {2019},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2019_3_a0/}
}