Diamantaki, K. Rizopoulos, C. Charitos, D. Tsianos, N. Gazi, A., Erratum: Theoretical and methodological implications of designing and implementing multiuser location-based games (Personal and Ubiquitous Computing DOI: 10.1007/s00779-010-0334-4), Personal and Ubiquitous Computing, (15), 51, 2011,