1. Aarts H, Verplanken B, Knippenberg A (1998) Predicting behavior from actions in the past: repeated decision making or a matter of habit? J Appl Soc Psychol 28(15):1355–1374
2. Alves J, Lange S, Riedmiller M (2014) Case study: behavioral prediction of future revenues in freemium games. In: NC2 Workshop, 36th Ger Conf Pattern Recognit (GCPR)
3. Amit R, Zott C (2001) Value creation in e-business. Strat Manag J 22(6–7):493–520
4. AppAnnie (2015) iOS top app charts, 4 January 2015. http://www.appannie.com/apps/ios/top/?device=iphone . Accessed 05 Jan 2015
5. Bapna R, Umyarov A (2012) Do your online friends make you pay? A randomized field experiment in an online music social network. http://www.heinz.cmu.edu/download.aspx?id=3660 . Accessed 25 Mar 2015