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van den Bosch, Remco C. E.; Gebhardt, Karl; Gültekin, Kayhan; Yıldırım, Akin; Walsh, Jonelle L. (May 2015), ”Hunting for Supermassive Black Holes in Nearby Galaxies With the Hobby-Eberly Telescope”, The Astrophysical Journal Supplement Series 218 (1): 13, doi:10.1088/0067-0049/218/1/10, 10, Bibcode: 2015ApJS..218...10V.
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