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Landolt، A.U. (1 يوليو 1992). "UBVRI photometric standard stars in the magnitude range 11.5-16.0 around the celestial equator". The Astronomical Journal. ج. 104: 340–371. Bibcode:1992AJ....104..340L. DOI:10.1086/116242.
Hewett، P.C.؛ Warren، S.J.؛ Leggett، S.K.؛ Hodgkin، S.T. (2006). "The UKIRT Infrared Deep Sky Survey ZY JHK photometric system: passbands and synthetic colours". Monthly Notices of the Royal Astronomical Society. ج. 367 ع. 2: 454–468. Bibcode:2006MNRAS.367..454H. DOI:10.1111/j.1365-2966.2005.09969.x.
CSIRO Astronomy and Space Science (2015). "Photoelectric Astronomy". CSIRO : Australian Telescope National Facility. مؤرشف من الأصل في 2018-09-14. اطلع عليه بتاريخ 2019-05-21.
Walker, E.W. "CCD Photometry". British Astronomical Association. مؤرشف من الأصل في 2018-09-07. اطلع عليه بتاريخ 2019-05-21.
"51 Peg". SIMBAD. Centre de Données astronomiques de Strasbourg. مؤرشف من الأصل في 2019-06-08. اطلع عليه بتاريخ 2019-05-22.
CSIRO Astronomy and Space Science (2002). "The Colour of Stars". CSIRO : Australian Telescope National Facility. مؤرشف من الأصل في 2018-09-02. اطلع عليه بتاريخ 2019-05-21.