PACS: 98.80.Cq, 97.60.Lf, 04.50.+h (all)
DOI: 10.1070/PU1991v034n05ABEH002502
URL: https://ufn.ru/en/articles/1991/5/m/
Citation: Sakharov A D "Cosmological transitions with changes in the signature of the metric" Sov. Phys. Usp. 34 (5) 409–413 (1991)

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