@article{MT_2002_5_1_a9,
     author = {S. V. Sudoplatov},
     title = {$\omega${-Stable} {Trigonometries} on a {Projective} {Plane}},
     journal = {Matemati\v{c}eskie trudy},
     pages = {135--166},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2002_5_1_a9/}
}