@article{10_4153_CJM_1967_077_9,
     author = {Ruckle, William},
     title = {Symmetric {Coordinate} {Spaces} and {Symmetric} {Bases}},
     journal = {Canadian journal of mathematics},
     pages = {828--838},
     year = {1967},
     volume = {19},
     number = {1},
     doi = {10.4153/CJM-1967-077-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-077-9/}
}