@article{10_1017_S0017089500030792,
     author = {Doust, Ian},
     title = {A weaker condition for normality},
     journal = {Glasgow mathematical journal},
     pages = {249--253},
     year = {1994},
     volume = {36},
     number = {2},
     doi = {10.1017/S0017089500030792},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500030792/}
}