@conference {kalikakis2007a,
	title = {Towards a P2P world: peered taxation},
	booktitle = {Proceedings of the 2nd International Workshop "E-taxation: State \& Perspectives"},
	year = {2007},
	month = {2},
	abstract = {This paper presents the current model for taxation and distribution of the taxes to government activities, and an alternative model is presented, according to which tax-payers can determine, to some extent, the way that the taxes they pay will be spent. The goal of this proposal is to increase citizen involvment and system transparency. The model proposal comescomplete with an architecture that supports the realization of the proposed scheme},
	author = {M. Kalikakis and D. Gouscos and Costas Vassilakis and P. Georgiadis}
}
@conference {kareliotis2006,
	title = {Towards Dynamic, Relevance-Driven Exception Resolution in Composite Web Services},
	booktitle = {Proceedings of OOPSLA 2006, Fourth International Workshop on SOA \& Web Services Best Practices},
	year = {2006},
	month = {10},
	abstract = {Web services have become the leading technology for application-toapplication (A2A) communication over distributed and heterogeneous environments. Both academia and industry have strived to enable useful service collaborations among distributed systems without any human intervention. Web service composition can be used to this end, to achieve business automation within one company or realize business-to-business (B2B) integration of heterogeneous software and cross-organizational computing systems. Service composition pro-vides added value, when a web service composition itself becomes a higher level composite web service. However, as business processes are long-lasting transactions, exceptions may often occur, necessitating the replacement of a service component which has been made unavailable, hindering the completion of some business process. In this paper we present an exception resolving approach based on discovering replacement components that are functionally equivalent, taking also into account criteria for qualitative substitutability. The proposed solution introduces the Service Relevance and Replacement Framework (SRRF) which undertakes exception handling.},
	author = {Christos Kareliotis and Costas Vassilakis and P. Georgiadis}
}
@conference {650426,
	title = {Transactional e-Government Services: An Integrated Approach},
	booktitle = {EGOV {\textquoteright}02: Proceedings of the First International Conference on Electronic Government},
	year = {2002},
	month = {9},
	pages = {276{\textendash}279},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {London, UK},
	abstract = {Although form-based transactional services are fundamental to electronic government activities, their widespread does neither meet the citizen{\textquoteright}s expectations, nor the potential offered by state-of-the-art technologies. Besides any bureaucratic impediments, the primary reason for this is that traditional software engineering approaches cannot satisfactorily handle all the aspects of electronic services lifecycle. In this paper we present experiences from developing and maintaining a set of electronic services for the Greek Ministry of Finance, and propose a new approach for handling electronic service projects. The proposed approach has been successfully employed for developing extensions to the existing services, as well as some new ones.},
	isbn = {3-540-44121-2},
	doi = {10.1007/978-3-540-46138-8_44},
	url = {http://link.springer.com/chapter/10.1007\%2F978-3-540-46138-8_44},
	author = {Costas Vassilakis and Laskaridis, G. and Giorgos Lepouras and S. Rouvas and P. Georgiadis}
}
@conference {719700,
	title = {Transaction Support in a Temporal DBMS},
	booktitle = {Proceedings of the International Workshop on Temporal Databases},
	year = {1995},
	month = {9},
	pages = {255{\textendash}271},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	address = {London, UK},
	abstract = {Transactions are a significant concept in database systems, facilitating functions both at user and system level. However transaction support in temporal DBMSs has not yet received enough research attention. In this paper, we present techniques for incorporating transaction support in a temporal DBMS, which is implemented as an additional layer to a commercial RDBMS. These techniques overcome certain limitations imposed by the underlying RDBMS, and avoid excessive increment of the log size.},
	isbn = {3-540-19945-4},
	doi = {10.1007/978-1-4471-3033-8_14},
	url = {http://link.springer.com/chapter/10.1007\%2F978-1-4471-3033-8_14},
	author = {Costas Vassilakis and N. Lorentzos and P. Georgiadis}
}
