@article{10_1017_S0017089500010065,
     author = {Kappe, Luise-Charlotte and Kirtland, Joseph},
     title = {Supplementation in groups},
     journal = {Glasgow mathematical journal},
     pages = {37--50},
     year = {2000},
     volume = {42},
     number = {1},
     doi = {10.1017/S0017089500010065},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500010065/}
}