@article{ITVS_2011_4_a0,
     author = {A. A. Levkov},
     title = {Effective fact storage organization for ontology},
     journal = {Informacionnye tehnologii i vy\v{c}islitelnye sistemy},
     pages = {3--9},
     publisher = {mathdoc},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ITVS_2011_4_a0/}
}