Marco Antonio Barbosa Luís Soares Barbosa José Creissac Campos Towards a Coordination Model for Interactive Systems. 89-103 2007 183 Electr. Notes Theor. Comput. Sci. http://dx.doi.org/10.1016/j.entcs.2007.01.063 db/journals/entcs/entcs183.html#BarbosaBC07