Guggenheimer, H. Über vierdimensionale Einsteinräume. (German) Zbl 0047.20707 Experientia 8, 420-421 (1952). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document Keywords:relativity theory PDFBibTeX XML