Drake, Jeremy J.; Ball, B.; Eldridge, John J.; Ness, J.-U.; Stancliffe, Richard J. (November 2011). "Close to the dredge: precise X-Ray C and N abundances in λ Andromeda and its precocious red giant branch mixing problem". The Astronomical Journal. 142 (5): 144. arXiv:1109.3663. Bibcode:2011AJ....142..144D. doi:10.1088/0004-6256/142/5/144. S2CID118271341.
Drake, Jeremy J.; Ball, B.; Eldridge, John J.; Ness, J.-U.; Stancliffe, Richard J. (November 2011). "Close to the dredge: precise X-Ray C and N abundances in λ Andromeda and its precocious red giant branch mixing problem". The Astronomical Journal. 142 (5): 144. arXiv:1109.3663. Bibcode:2011AJ....142..144D. doi:10.1088/0004-6256/142/5/144. S2CID118271341.
Drake, Jeremy J.; Ball, B.; Eldridge, John J.; Ness, J.-U.; Stancliffe, Richard J. (November 2011). "Close to the dredge: precise X-Ray C and N abundances in λ Andromeda and its precocious red giant branch mixing problem". The Astronomical Journal. 142 (5): 144. arXiv:1109.3663. Bibcode:2011AJ....142..144D. doi:10.1088/0004-6256/142/5/144. S2CID118271341.
Drake, Jeremy J.; Ball, B.; Eldridge, John J.; Ness, J.-U.; Stancliffe, Richard J. (November 2011). "Close to the dredge: precise X-Ray C and N abundances in λ Andromeda and its precocious red giant branch mixing problem". The Astronomical Journal. 142 (5): 144. arXiv:1109.3663. Bibcode:2011AJ....142..144D. doi:10.1088/0004-6256/142/5/144. S2CID118271341.