@article{BAG_2000__41_1_224335,
     author = {Sulanke, Rolf},
     title = {M\"obius invariants for pairs of spheres  in the {M\"obius} space .},
     journal = {Beitr\"age zur Algebra und Geometrie},
     pages = {233},
     publisher = {mathdoc},
     volume = {41},
     number = {1},
     year = {2000},
     zbl = {1003.53016},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/BAG_2000__41_1_224335/}
}