@article{QUE_2000_2000_1_a4,
     author = {Costa, Alex},
     title = {Diversidad y complementariedad de las fuentes estad{\'\i}sticas.},
     journal = {Q\"uestii\'o},
     pages = {85-110},
     year = {2000},
     volume = {24},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/QUE_2000_2000_1_a4/}
}