@article{JGG_2018_22_2_JGG_2018_22_2_a11,
     author = {A. M. D'Azevedo Breda and J. M. Dos Santos },
     title = {Spherical {Geometry} and {Spherical} {Tilings} with {GeoGebra}},
     journal = {Journal for geometry and graphics},
     pages = {283--299},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {2018},
     url = {http://geodesic.mathdoc.fr/item/JGG_2018_22_2_JGG_2018_22_2_a11/}
}