"Heringa"@en . "Dr" . "Heringa, J. (Jan)" . "J."@en . "2010" . "J. Heringa" . "J. Heringa"@en . "Dr. J. Heringa"@en . "1919" . . . . "Heringa, J., Dr." . . . "Jan" . "Jan Heringa"@de-DE . . . .