"Petersen"@en . . "Mathematiker, Dänemark Julius Petersen" . "Julius Petersen"@en . . "Mathematician, Denmark Julius Petersen" . . "(Philologe)" . . "J." . . "Mathématicien, Danemark Julius Petersen" . . "Jul" . "J[ulius]" . . "Petersen, Julius Mathematician, Denmark" . "1941-08-27" . . . . "Philologe Julius Petersen" . . "Petersen, Julius Mathematiker, Dänemark" . . "Julius"@en . "PETERSEN, Julius, Professor in the University of Berlin" . "PETERSEN" . "Petersen, Julius Professeur à Bâle" . . "1878-11-05" . "Petersen, Julius Philologe" . "Petersen, Julius Mathématicien, Danemark" . "J. Petersen" . "Julius (Philologe) Petersen" . . . . . "ペェタァゼン" . "Professeur à Bâle Julius Petersen" . "Petersen"@fr-FR . . . . "Professor in the University of Berlin Julius PETERSEN" . "Jul Petersen" . . "J[ulius] Petersen" . . .