Sonneberg Observatory (English Wikipedia)

Kroll, Peter (2009). "Jahresbericht 2008 der Sternwarte Sonneberg" (PDF). Mitteilungen der Astronomischen Gesellschaft (in German). Vol. 92. pp. 713–717. Retrieved 2024-06-30.
Kroll, Peter (2008). "Jahresbericht 2007 der Sternwarte Sonneberg" (PDF). Mitteilungen der Astronomischen Gesellschaft (in German). Vol. 91. pp. 677–680. Retrieved 2024-06-30.

cambridge.org

Bräuer, H.-J.; Richter, G.A. (1994). "Sonneberg Observatory: Sky Patrol, Field Patrol, The world's largest living WFPA" (PDF). In MacGillivray, H.T.; Thomson, E.B.; Lasker, Barry M.; Reid, I. Neil; Malin, David F.; West, Richard M.; Lorenz, Hilmar (eds.). Proceedings of the 161st Symposium of the International Astronomical Union, held in Potsdam, Germany, August 23-27, 1993. IAU Symposium. Vol. 161. Kluwer Academic Publishers. pp. 43 45. ISBN 0-7923-2878-7. Retrieved 2024-06-30.
Fuhrmann, B.; Kroll, P.; Bräuer, H.-J. (1994). "The Sonneberg Plate Collection: Handling the Archive" (PDF). In MacGillivray, H.T.; Thomson, E.B.; Lasker, Barry M.; Reid, I. Neil; Malin, David F.; West, Richard M.; Lorenz, Hilmar (eds.). Proceedings of the 161st Symposium of the International Astronomical Union, held in Potsdam, Germany, August 23-27, 1993. IAU Symposium. Vol. 161. Kluwer Academic Publishers. pp. 369 370. ISBN 0-7923-2878-7. Retrieved 2024-06-30.

"Cuno Hoffmeister – 125 Jahre" (in German). Astronomiemuseum e.V. Retrieved 2024-06-30.

"Sternwarte Sonneberg". 4pi Systeme GmbH (in German). 4π Systeme. Retrieved 2024-06-30.

Kroll, Peter (2009). "Real and Virtual Heritage – The Plate Archive in Sonneberg – Digitisation, Preservation and Scientific Programme". In Wolfschmidt, Gudrun (ed.). Cultural Heritage of Astronomical Observatories – From Classical Astronomy to Modern Astrophysics. Proceedings of International ICOMOS Symposium in Hamburg, October 14–17, 2008. International Council on Monuments and Sites, Monuments and Sites. Vol. XVIII. Berlin: Hendrik Bäßler-Verlag. pp. 310 315. Retrieved 2024-06-30.
Kunzmann, Björn (2009). "Real and Virtual Heritage Historical Astronomical Plate Archives in Sonneberg, Bamberg and Hamburg Observatories, the Evolution of Astrophysics and their Influence on Human Knowledge and Culture". In Wolfschmidt, Gudrun (ed.). Cultural Heritage of Astronomical Observatories – From Classical Astronomy to Modern Astrophysics. Proceedings of International ICOMOS Symposium in Hamburg, October 14–17, 2008. International Council on Monuments and Sites, Monuments and Sites. Vol. XVIII. Berlin: Hendrik Bäßler-Verlag. pp. 304 309. Retrieved 2024-06-30.

"Blick ins Weltall – Sternwarte soll erhalten bleiben". Die Zeit Online (in German). 2022-01-14. Retrieved 2024-06-30.