Facilitating human-centric service delivery using a pluggable service development framework. - Nikolaos Dimakis; Georgios Gkekas; Ghassan Karame; Theofilos Karachristos; Stamatis Tsolakidis; John Soldatos 001; Lazaros Polymenakos (Int. J. Ad Hoc Ubiquitous Comput., 2009)