@conference {sanchez2001design, title = {Design Tasks in Virtual Environments Development}, booktitle = {13th International Conference on Software Engineering and Knowledge Engineering (SEKE01)}, year = {2001}, attachments = {http://nil.fdi.ucm.es/sites/default/files/SEKE01.pdf}, author = {Mar{\'\i}a Isabel S{\'a}nchez and Ang{\'e}lica de Antonio and Imbert, Ricardo and Gonzalo M{\'e}ndez and de Amescua, Antonio} }