@article{EXMATH_1986_1986_1_a16,
     author = {Pay\'a Albert, Rafael},
     title = {Transitividad de las propiedades de intersecci\'on de bolas.},
     journal = {Extracta mathematicae},
     pages = {44-46},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1986_1986_1_a16/}
}