@article{01883649, title = {The double bubble problem in spherical and hyperbolic space.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {30}, year = {2002}, pages = {641-699}, doi = {10.1155/S0161171202207188}, zbl = {1036.49039}, language = {en}, url = {http://dml.mathdoc.fr/item/01883649} }
Cotton, Andrew; Freeman, David. The double bubble problem in spherical and hyperbolic space.. International Journal of Mathematics and Mathematical Sciences, Tome 30 (2002) pp. 641-699. doi : 10.1155/S0161171202207188. http://gdmltest.u-ga.fr/item/01883649/