Geodesic
Theorem on a Quadrangle
Matematičeskoe obrazovanie, Tome 13 (2000) no. 2, pp. 22-28.

Voir la notice de l'article provenant de la source Math-Net.Ru

@article{MO_2000_13_2_a1,
     author = {N. S. Astapov},
     title = {Theorem on a {Quadrangle}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {22--28},
     publisher = {mathdoc},
     volume = {13},
     number = {2},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2000_13_2_a1/}
}
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N. S. Astapov. Theorem on a Quadrangle. Matematičeskoe obrazovanie, Tome 13 (2000) no. 2, pp. 22-28. http://geodesic.mathdoc.fr/item/MO_2000_13_2_a1/