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Montesinos, Merced; Morales-Técotl, Hugo A.; Urrutia, Luis F.; Vergara, J. David Complex canonical gravity and reality constraints. (English) Zbl 0943.83029 Gen. Relativ. Gravitation 31, No. 5, 719-723 (1999). MSC: 83C45 83C05 PDFBibTeX XMLCite \textit{M. Montesinos} et al., Gen. Relativ. Gravitation 31, No. 5, 719--723 (1999; Zbl 0943.83029) Full Text: DOI