@article{SD_1966-1967__20_2_A8_0,
     author = {Abbott, James C.},
     title = {Algebras of implication and semi-lattices},
     journal = {S\'eminaire Dubreil. Alg\`ebre et th\'eorie des nombres},
     note = {talk:20},
     pages = {1--8},
     publisher = {Secr\'etariat math\'ematique},
     volume = {20},
     number = {2},
     year = {1966-1967},
     mrnumber = {234872},
     zbl = {0172.02001},
     language = {en},
     url = {http://www.numdam.org/item/SD_1966-1967__20_2_A8_0/}
}