Rikap, Cecilia;      (2024)    Varieties of corporate innovation systems and their interplay with global and national systems: Amazon, Facebook, Google and Microsoft’s strategies to produce and appropriate artificial intelligence.                   Review of International Political Economy     pp. 1-29.    10.1080/09692290.2024.2365757 <https://doi.org/10.1080/09692290.2024.2365757>.    (In press).    Green open access