@article{AL_2010_49_3_a2,
     author = {A. V. Karpenko and L. L. Maksimova},
     title = {Simple weakly transitive modal algebras},
     journal = {Algebra i logika},
     pages = {346--365},
     publisher = {mathdoc},
     volume = {49},
     number = {3},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2010_49_3_a2/}
}