The lattice of normal modal logics
Algebra i logika, Tome 13 (1974) no. 2, pp. 188-216
@article{AL_1974_13_2_a5,
author = {L. L. Maksimova and V. V. Rybakov},
title = {The lattice of normal modal logics},
journal = {Algebra i logika},
pages = {188--216},
year = {1974},
volume = {13},
number = {2},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/AL_1974_13_2_a5/}
}
L. L. Maksimova; V. V. Rybakov. The lattice of normal modal logics. Algebra i logika, Tome 13 (1974) no. 2, pp. 188-216. http://geodesic.mathdoc.fr/item/AL_1974_13_2_a5/