Geodesic
Unbounded semidistributive lattices
Algebra i logika, Tome 39 (2000) no. 1, pp. 87-92 
J. B. Nation. Unbounded semidistributive lattices. Algebra i logika, Tome 39 (2000) no. 1, pp. 87-92. http://geodesic.mathdoc.fr/item/AL_2000_39_1_a6/
@article{AL_2000_39_1_a6,
     author = {J. B. Nation},
     title = {Unbounded semidistributive lattices},
     journal = {Algebra i logika},
     pages = {87--92},
     year = {2000},
     volume = {39},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2000_39_1_a6/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

We consider two properties that are close to lower boundedness in the class of finite upper semidistributive lattices. We construct a finite upper semidistributive lattice possessing both of the above-mentioned properties, but which is not lower bounded.