Hans StephaniHans Stephani was a German physicist who mainly worked on the general theory of relativity.BiographyStephani obtained his master's degree at Jena in 1958 under the supervision of Gerhard Heber. He finished his PhD under Ernst Schmutzer at University of Jena and joined as a lecturer there. His wife Irmtraud Stephani is a mathematician at the same university. He retired in 2000.Books*