Peter H. Homann: Hydrogen metabolism of green algae: discovery and early research - a tribute to Hans Gaffron and his coworkers. In: Govindjee, J.T. Beatty, H. Gest and J.F. Allen (Hrsgg.): Discoveries in Photosynthesis. In der Reihe: Advances in Photosynthesis and Respiration, Bd. 20. Springer-Verlag, S. 119 ff., ISBN 978-1-4020-3323-0.
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