@article{PORMA_1991__48_4_115766,
     author = {Blyth, T.S. and Varlet, J.C.},
     title = {On the {MS-algebras} of the unit cube},
     journal = {Portugaliae mathematica},
     pages = {405--421},
     publisher = {mathdoc},
     volume = {48},
     number = {4},
     year = {1991},
     mrnumber = {1147607},
     zbl = {0773.06016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1991__48_4_115766/}
}