@article{10_1017_S204061850003495X,
     author = {Maddox, I. J.},
     title = {Some inclusion theorems},
     journal = {Glasgow mathematical journal},
     pages = {161--168},
     year = {1964},
     volume = {6},
     number = {4},
     doi = {10.1017/S204061850003495X},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S204061850003495X/}
}