@article{GDZPPN002081407, title = {Covering the sphere with 11 equal circles.}, journal = {Elemente der Mathematik}, volume = {41}, year = {1986}, pages = {35-38}, zbl = {0598.52010}, url = {http://dml.mathdoc.fr/item/GDZPPN002081407} }
Tarnai, T.; Gáspár, Zs. Covering the sphere with 11 equal circles.. Elemente der Mathematik, Tome 41 (1986) pp. 35-38. http://gdmltest.u-ga.fr/item/GDZPPN002081407/