Skrutskie, M. F.; Cutri, R. M.; Stiening, R.; Weinberg, M. D.; Schneider, S.; Carpenter, J. M.; Beichman, C.; Capps, R.; et al. (2006 m. vasario mėn.), "The Two Micron All Sky Survey (2MASS)", Astrophysical Journal131(2): 1163–1183, doi:10.1086/498708, Bibcode: {{{bibcode}}}
Erwin, Peter & Debattista, Victor P. (2013 m. gegužės mėn.), "Peanuts at an angle: detecting and measuring the three-dimensional structure of bars in moderately inclined galaxies", Monthly Notices of the Royal Astronomical Society431(4): 3060–3086, doi:10.1093/mnras/stt385, Bibcode: {{{bibcode}}}
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Skrutskie, M. F.; Cutri, R. M.; Stiening, R.; Weinberg, M. D.; Schneider, S.; Carpenter, J. M.; Beichman, C.; Capps, R.; et al. (2006 m. vasario mėn.), "The Two Micron All Sky Survey (2MASS)", Astrophysical Journal131(2): 1163–1183, doi:10.1086/498708, Bibcode: {{{bibcode}}}
Erwin, Peter & Debattista, Victor P. (2013 m. gegužės mėn.), "Peanuts at an angle: detecting and measuring the three-dimensional structure of bars in moderately inclined galaxies", Monthly Notices of the Royal Astronomical Society431(4): 3060–3086, doi:10.1093/mnras/stt385, Bibcode: {{{bibcode}}}