@article{DM_1994_6_2_a1,
     author = {S. S. Marchenkov},
     title = {Precomplete classes in the {Cartesian} products of $P_2$ and $P_3$},
     journal = {Diskretnaya Matematika},
     pages = {21--42},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1994_6_2_a1/}
}