'This is the most comprehensive study on open access academic publishing. It covers the economic and legal aspects of this market of ideas, including the actual importance, shortcomings and potential developments of open access and is therefore a must for everyone interested in the organization of academic publishing. The authors provide a new and concise look on open access publishing, its economic consequences and legal requirements based on thorough empirical research in many countries.'--Hans-Bernd Schäfer, Bucerius Law School, Germany