Goldberg, J. N.; Sachs, R. A theorem on Petrov types. (English) Zbl 0113.44807 Acta Phys. Pol. 22, Suppl., 13-23 (1962). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 ReviewsCited in 27 Documents Keywords:classical field theory, relativity theory PDFBibTeX XMLCite \textit{J. N. Goldberg} and \textit{R. Sachs}, Acta Phys. Polon. 22, 13--23 (1962; Zbl 0113.44807)