@article{10_4153_CMB_1996_011_7,
     author = {Li, Chi-Kwong and Whitney, Wayne},
     title = {Closed {Symmetric} {Overgroups} of {Sn} in {On}},
     journal = {Canadian mathematical bulletin},
     pages = {83--94},
     year = {1996},
     volume = {39},
     number = {1},
     doi = {10.4153/CMB-1996-011-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1996-011-7/}
}