@article{SEMR_2019_16_a145,
     author = {V. V. Aseev},
     title = {Rectangle as a generalized angle},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {2013--2018},
     publisher = {mathdoc},
     volume = {16},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2019_16_a145/}
}