@article{ELMA_1986__41_141375,
     author = {T. Tarnai and Zs. G\'asp\'ar},
     title = {Covering the sphere with 11 equal circles.},
     journal = {Elemente der Mathematik},
     pages = {35--38},
     publisher = {mathdoc},
     volume = {41},
     year = {1986},
     zbl = {0598.52010},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1986__41_141375/}
}