@article{VMJ_2010_12_1_a1,
     author = {Y. P. Yemelchenkov and N. L. Shatokhin},
     title = {To concept <<middle>> of affine planes},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {10--16},
     publisher = {mathdoc},
     volume = {12},
     number = {1},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2010_12_1_a1/}
}