Dimitris Gouscos Stathis Rouvas Costas Vassilakis Panagiotis Georgiadis An Object-Oriented Approach for Designing Administrative E-forms and Transactional E-services. 19-30 2002 conf/oois/2002 OOIS http://dx.doi.org/10.1007/3-540-46102-7_6 db/conf/oois/oois2002.html#GouscosRVG02