@article{10_4153_CJM_1977_103_9,
     author = {Whitehead, Jennifer},
     title = {Residuals of the {Join} of {Ascendant} {Subgroups}},
     journal = {Canadian journal of mathematics},
     pages = {1066--1068},
     year = {1977},
     volume = {29},
     number = {5},
     doi = {10.4153/CJM-1977-103-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-103-9/}
}