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Carsten Röcker,  Services and Applications for Smart Office Environments - A Survey of State-of-the-Art Usage Scenarios.   journal   = {International Journal of Social, Behavioral, Educational, Economic, Business and Industrial Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2010, vol. 37(1). 51 - 67[viewed 20 September 2018]. Available from: http://waset.org/publications/12252.