@article{AL_2011_50_2_a5,
     author = {A. D. Yashin},
     title = {New constants in two pretabular superintuitionistic logics},
     journal = {Algebra i logika},
     pages = {246--267},
     publisher = {mathdoc},
     volume = {50},
     number = {2},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2011_50_2_a5/}
}