@article{10_1017_S204061850003361X,
     author = {Munn, W. D.},
     title = {Semigroups satisfying minimal conditions},
     journal = {Glasgow mathematical journal},
     pages = {145--152},
     year = {1957},
     volume = {2},
     number = {3},
     doi = {10.1017/S204061850003361X},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S204061850003361X/}
}