@article{RMI_2004_2004_1_a10,
     author = {Freire, Emilio and Gasull, Armengol, Guillamon, Antoni},
     title = {Una caracterizaci\'on de los centros is\'ocronos en t\'erminos de simetr{\'\i}as.},
     journal = {Revista matem\'atica iberoamericana},
     pages = {205-222},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RMI_2004_2004_1_a10/}
}