@conference{ivist2007, author = "G. Kapitsaki and D. Kateros and I. Foukarakis and G. N. Prezerakos and Kaklamani, Dimitra I. and Venieris, Iakovos S.", booktitle = "In proceedings of the 16th IST Mobile and Wireless Communications Summit", month = "July", note = "Budapest, Hungary", title = "{S}ervice composition: {S}tate of the art and future challenges", year = "2007", }