@article{10_4064_cm_30_1_41_55,
     author = {William A. Lampe},
     title = {Subalgebra lattices of unary algebras and an axiom of choice},
     journal = {Colloquium Mathematicum},
     pages = {41--55},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1974},
     doi = {10.4064/cm-30-1-41-55},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-30-1-41-55/}
}