Mutlu-Pakdil, Burçin, Sand, David J., Crnojević, Denija, Olszewski, Edward W., Zaritsky, Dennis, Strader, Jay, Collins, Michelle L., Seth, Anil C., and Willman, Beth. The Elusive Distance Gradient in the Ultrafaint Dwarf Galaxy Hercules: A Combined Hubble Space Telescope and Gaia View. Retrieved from https://par.nsf.gov/biblio/10253889. The Astrophysical Journal 902.2 Web. doi:10.3847/1538-4357/abb40b.

Mutlu-Pakdil, Burçin, Sand, David J., Crnojević, Denija, Olszewski, Edward W., Zaritsky, Dennis, Strader, Jay, Collins, Michelle L., Seth, Anil C., & Willman, Beth. The Elusive Distance Gradient in the Ultrafaint Dwarf Galaxy Hercules: A Combined Hubble Space Telescope and Gaia View. The Astrophysical Journal, 902 (2). Retrieved from https://par.nsf.gov/biblio/10253889. https://doi.org/10.3847/1538-4357/abb40b

Mutlu-Pakdil, Burçin, Sand, David J., Crnojević, Denija, Olszewski, Edward W., Zaritsky, Dennis, Strader, Jay, Collins, Michelle L., Seth, Anil C., and Willman, Beth. "The Elusive Distance Gradient in the Ultrafaint Dwarf Galaxy Hercules: A Combined Hubble Space Telescope and Gaia View". The Astrophysical Journal 902 (2). Country unknown/Code not available. https://doi.org/10.3847/1538-4357/abb40b. https://par.nsf.gov/biblio/10253889.

@article{osti_10253889,
place = {Country unknown/Code not available}, title = {The Elusive Distance Gradient in the Ultrafaint Dwarf Galaxy Hercules: A Combined Hubble Space Telescope and Gaia View}, url = {https://par.nsf.gov/biblio/10253889}, DOI = {10.3847/1538-4357/abb40b}, abstractNote = {}, journal = {The Astrophysical Journal}, volume = {902}, number = {2}, author = {Mutlu-Pakdil, Burçin and Sand, David J. and Crnojević, Denija and Olszewski, Edward W. and Zaritsky, Dennis and Strader, Jay and Collins, Michelle L. and Seth, Anil C. and Willman, Beth}, editor = {null} }