@article{JRAM_1972__253_151197,
     author = {Paul D. Bacsich},
     title = {Extension of {Boolean} homomorphisms with bounding semimorphisms.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {24--27},
     publisher = {mathdoc},
     volume = {253},
     year = {1972},
     zbl = {0254.06008},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1972__253_151197/}
}