@article{10_1017_S0017089500005486,
     author = {Smith, Howard},
     title = {On certain subgroups of a join of subnormal subgroups},
     journal = {Glasgow mathematical journal},
     pages = {103--105},
     year = {1984},
     volume = {25},
     number = {1},
     doi = {10.1017/S0017089500005486},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500005486/}
}