@article{AL_1997_36_3_a2,
     author = {A. V. Kravchenko},
     title = {On the lattice complexity of quasivarieties of graphs and},
     journal = {Algebra i logika},
     pages = {273--281},
     publisher = {mathdoc},
     volume = {36},
     number = {3},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1997_36_3_a2/}
}