Media type: E-Article Title: Lecture Notes in Computer Science: Pricing and Commission in Two-Sided Markets with Free Upgrades Contributor: Sood, Mansi; Moharir, Sharayu; Kulkarni, Ankur A. imprint: Springer International Publishing, 2019 Published in: Lecture Notes in Computer Science Language: Not determined DOI: 10.1007/978-3-030-10659-1_8 ISSN: 0302-9743; 1611-3349 Origination: Footnote: