Funding for this research was provided by:
National Science Foundation (ACI SI2-SSI program grant #1148515)
EU FP7-ICT (project PaaSage (317715))
Polish grant (3033/7PR/2014/2)
AGH grant (11.11.230.124)
Article History
Received: 8 June 2015
Accepted: 29 October 2015
First Online: 17 November 2015