@article{MO_2021_98_2_a3,
     author = {S. F. Osinkin},
     title = {Triangles with specified values of the incircle and circumcircle radii},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {28--33},
     publisher = {mathdoc},
     volume = {98},
     number = {2},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2021_98_2_a3/}
}