@article{MO_2022_4_a0,
     author = {A. N. Afanasyev},
     title = {Oriented angles, generalized pedal triangles and generalized {Simson} lines},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {2--10},
     year = {2022},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2022_4_a0/}
}