Kernphysikalische Forschungsberichte (Research Reports in Nuclear Physics) was an internal publication of the German Uranverein, which was initiated under the Heereswaffenamt (Army Ordnance Office) in 1939; in 1942, supervision of the Uranverein was turned over to the Reichsforschungsrat under the Reichserziehungsministerium. Reports in this publication were classified Top Secret, they had very limited distribution, and the authors were not allowed to keep copies. The reports were confiscated under the Allied Operation Alsos and sent to the United States Atomic Energy Commission for evaluation. In 1971, the reports were declassified and returned to Germany. Many of the reports are available at the Karlsruhe Nuclear Research Center and the Niels Bohr Library of the American Institute of Physics. Many of them are reprinted and transcribed in the book "Collected Works / Gesammelte Werke" listed below which is available in most libraries. There are reports numbered G-1 to G-395.
Prominent German scientists who published reports in Kernphysikalische Forschungsberichte as members of the Uranverein can be grouped as follows: