Services and the Business Models of Product Firms: An Empirical Analysis of the Software Industry

Suarez, Fernando F.; Cusumano, Michael A.; Kahl, Steven J. . (2013). Services and the Business Models of Product Firms: An Empirical Analysis of the Software Industry. Management Science, 59(2), 420–435. doi:10.1287/mnsc.1120.1634

An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research