@article{MAN_1962__148_161006,
     author = {N.V. SUBRAHMANYAM},
     title = {Boolean {Semirings.}},
     journal = {Mathematische Annalen},
     pages = {395--401},
     year = {1962},
     volume = {148},
     url = {http://geodesic.mathdoc.fr/item/MAN_1962__148_161006/}
}