Willeke, GerhardGerhardWillekeRäuber, A.A.Räuber2022-03-042022-03-042012https://publica.fraunhofer.de/handle/publica/23017910.1016/B978-0-12-388419-0.00003-0en621On the history of terrestrial PV development: With a focus on Germanybook article