[Köbler et al. 2010] Köbler, F., Koene, P., Krcmar, H., Altmann, M. and Leimeister, J. M.: "LocaTag - An NFC-based system enhancing instant messaging tools with real-time user location"; 2. International Workshop on Near Field Communication (NFC) 2010, Monaco, Monaco, 180 (28-10) (2010).

[Köbler et al. 2010] Köbler, F., Koene, P., Krcmar, H., Altmann, M. and Leimeister, J. M.: "LocaTag - An NFC-based system enhancing instant messaging tools with real-time user location"; 2. International Workshop on Near Field Communication (NFC) 2010, Monaco, Monaco, 180 (28-10) (2010).