@article{CSIS_2005_2_2_a1,
     author = {Carmen Padr\'on and Juanma Dodero and Paloma D{\'\i}az and Ignacio Aedo},
     title = {The collaborative development of didactic materials},
     journal = {Computer Science and Information Systems},
     publisher = {mathdoc},
     volume = {2},
     number = {2},
     year = {2005},
     url = {http://geodesic.mathdoc.fr/item/CSIS_2005_2_2_a1/}
}