@article{AL_2000_39_1_a6,
     author = {J. B. Nation},
     title = {Unbounded semidistributive lattices},
     journal = {Algebra i logika},
     pages = {87--92},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {2000},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2000_39_1_a6/}
}