Ein Blick ins LichtDavid S. Falk, Dieter R. Brill, David G. Stork, Anita Ehlers, Rudolf Kippenhahn · First published 1990Open the Tome
Seeing the lightDavid S. Falk, David R. Falk, Dieter R. Brill, David G. Stork · First published 1986Open the Tome
