@article{MZM_2010_88_2_a8,
     author = {S. P. Kikot'},
     title = {Axiomatization of {Modal} {Logic} {Squares} with {Distinguished} {Diagonal}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {261--274},
     publisher = {mathdoc},
     volume = {88},
     number = {2},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2010_88_2_a8/}
}