@article{gogoulos2014elma, author = "Gogoulos, Fotis I. and Antonakopoulou, Anna and Lioudakis, Georgios V. and Mousas, Aziz and Kaklamani, Dimitra I. and Venieris, Iakovos S.", issn = "1019-6781", journal = "Electronic Markets", note = "Available online 4 April 2014", title = "{O}n the design of a privacy aware authorization engine for collaborative environments", url = "http://dx.doi.org/10.1007/s12525-014-0155-9", year = "2014", }