@article{MAN_1963__151_161087,
     author = {N.V. SUBRAHMANYAM},
     title = {An {Extension} of {Boolean} {Lattice} {Theory.}},
     journal = {Mathematische Annalen},
     pages = {332--345},
     year = {1963},
     volume = {151},
     zbl = {0122.26002},
     url = {http://geodesic.mathdoc.fr/item/MAN_1963__151_161087/}
}