@article{MO_2005_33_2_a2,
     author = {S. Bogdanov and S. V. Dvoryaninov and S. Krauter},
     title = {Do {Diagonals} of a {Parallelogram} {Intersect?}},
     journal = {Matemati\v{c}eskoe obrazovanie},
     pages = {54--61},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2005_33_2_a2/}
}