Jones, D.; Mitchell, D. L.; Lloyd, M.; Pollacco, D.; O'Brien, T. J.; Meaburn, J.; Vaytet, N. M. H. The morphology and kinematics of the Fine Ring Nebula, planetary nebula Sp 1, and the shaping influence of its binary central star. Monthly Notices of the Royal Astronomical Society. 2012, 420 (3): 2271–79. Bibcode:2012MNRAS.420.2271J. S2CID 119164201. arXiv:1111.2860. doi:10.1111/j.1365-2966.2011.20192.x.
Darling, David. Shapley 1. David Darling Encyclopedia. [2009-10-21]. (原始内容存档于2016-03-03).
Shapley 1. David Darling. [10 February 2013]. (原始内容存档于2016-03-03).
doi.org
Jones, D.; Mitchell, D. L.; Lloyd, M.; Pollacco, D.; O'Brien, T. J.; Meaburn, J.; Vaytet, N. M. H. The morphology and kinematics of the Fine Ring Nebula, planetary nebula Sp 1, and the shaping influence of its binary central star. Monthly Notices of the Royal Astronomical Society. 2012, 420 (3): 2271–79. Bibcode:2012MNRAS.420.2271J. S2CID 119164201. arXiv:1111.2860. doi:10.1111/j.1365-2966.2011.20192.x.
Jones, D.; Mitchell, D. L.; Lloyd, M.; Pollacco, D.; O'Brien, T. J.; Meaburn, J.; Vaytet, N. M. H. The morphology and kinematics of the Fine Ring Nebula, planetary nebula Sp 1, and the shaping influence of its binary central star. Monthly Notices of the Royal Astronomical Society. 2012, 420 (3): 2271–79. Bibcode:2012MNRAS.420.2271J. S2CID 119164201. arXiv:1111.2860. doi:10.1111/j.1365-2966.2011.20192.x.
semanticscholar.org
api.semanticscholar.org
Jones, D.; Mitchell, D. L.; Lloyd, M.; Pollacco, D.; O'Brien, T. J.; Meaburn, J.; Vaytet, N. M. H. The morphology and kinematics of the Fine Ring Nebula, planetary nebula Sp 1, and the shaping influence of its binary central star. Monthly Notices of the Royal Astronomical Society. 2012, 420 (3): 2271–79. Bibcode:2012MNRAS.420.2271J. S2CID 119164201. arXiv:1111.2860. doi:10.1111/j.1365-2966.2011.20192.x.