1. Berry LL (1983) Relationship marketing. In: Berry L, Shostack GL, Upah CD (eds) Emerging perspectives on service marketing. American Marketing Association, Chicago, pp 25–28
2. Broadvision (1998) BroadVision featured in BusinessWeek’s ‘InfoTech 10’. PR Newswire Association LLC, 1998-10-27
3. Cherbakov L, Bravery A, Goodman BD, Pandya A, Baggett J (2007) Changing the corporate IT development model: tapping the power of grassroots computing. IBM Systems Journal 46(4):1–20
4. Diller H, Kusterer M (1988) Beziehungsmanagement. Theoretische Grundlagen und explorative Befunde. Marketing ZFP 3:211–220
5. Facebook Statistics (2011) http://www.facebook.com/press/info.php?statistics . Accessed 2011-11-13