@article{AA_2009_21_1_a3,
     author = {S. A. Evdokimov and I. N. Ponomarenko},
     title = {Schemes of relations of the finite projective plane, and their extensions},
     journal = {Algebra i analiz},
     pages = {90--132},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2009_21_1_a3/}
}