@article{1183737057,
author = {Makinson, David},
title = {Review: E. J. Lemmon, An Extension Algebra and the Modal System T; E. J. Lemmon, Algebraic Semantics for Modal Logics},
journal = {J. Symbolic Logic},
volume = {35},
number = {1},
year = {1970},
pages = { 136-137},
language = {en},
url = {http://dml.mathdoc.fr/item/1183737057}
}
Makinson, David. Review: E. J. Lemmon, An Extension Algebra and the Modal System T; E. J. Lemmon, Algebraic Semantics for Modal Logics. J. Symbolic Logic, Tome 35 (1970) no. 1, pp. 136-137. http://gdmltest.u-ga.fr/item/1183737057/