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Ross, Alf, 1899-1979 (Nombre personal)
His Theorie der rechtsquellen, 1929.
Alf Ross 1899-1999, 1999.
On law and justice, 2004: CIP t.p. (Alf Ross, Ph.D. (Uppsala), Jur. D. (Copernhagen), Jur. D. (Oslo), prof. of law at the Univ. of Copenhagen)
Wikipedia, Oct. 31, 2011 (Alf Ross; Alf Niels Christian Ross; born June 10, 1899; died Aug. 17, 1979)