@congreso_internacional{549, author = {Lina García-Cabrera and M.J Rodríguez and J Parets}, title = {Toward a Formalisation of Evolutionary Hypermedia Systems Based on System Theory}, year = {2001}, volume = {2178}, pages = {270-284}, month = {February}, publisher = {Eurocast 2001}, address = {Las Palmas de Gran Canaria (Spain)}, }