@article{10_4064_cm_37_1_167_173,
     author = {Frank Harary and Abbe Mowshowitz and Allen Schwenk},
     title = {Line minimal {Boolean} forests},
     journal = {Colloquium Mathematicum},
     pages = {167--173},
     publisher = {mathdoc},
     volume = {37},
     number = {1},
     year = {1971},
     doi = {10.4064/cm-37-1-167-173},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-37-1-167-173/}
}