TY - CHAP A1 - Kindsmüller, Martin Christof A1 - Melzer, A. A1 - Mentler, T. T1 - Online communities and online community building T2 - In: Encyclopedia of information science and technology / Mehdi Khosrow-Pour. Vol. 6. Mu - Q Y1 - 2009 SP - 2899 EP - 2905 PB - Information Science Reference CY - Hershey, Pa. ; New York, NY ET - 2. ed. ER -