%0 Journal Article %T Freemium, Network Effects and Digital Competition: Evidence from the Introduction of Game Center on the Apple App Store %A Boudreau, Kevin %A Jeppesen, Lars Bo %A Miric, Milan %A , %J SSRN Electronic Journal %@ 1556-5068 %D 2017-01-01 %I Elsevier BV %~ DeepDyve