@article{JGG_2013_17_1_JGG_2013_17_1_a0,
     author = {Z. Cerin },
     title = {Generalization of a {Geometry} {Problem} {Posed} by {Fermat}},
     journal = {Journal for geometry and graphics},
     pages = {1--5},
     publisher = {mathdoc},
     volume = {17},
     number = {1},
     year = {2013},
     url = {http://geodesic.mathdoc.fr/item/JGG_2013_17_1_JGG_2013_17_1_a0/}
}