Manolis Tzagarakis Dimitris Avramidis Maria Kyriakopoulou Monica M. C. Schraefel Michalis Vaitis Dimitris Christodoulakis Structuring primitives in the Callimachus component-based open hypermedia system. 139-162 2003 26 J. Network and Computer Applications 1 http://dx.doi.org/10.1016/S1084-8045(02)00064-4 db/journals/jnca/jnca26.html#TzagarakisAKSVC03