Merle, R. E.; Nemchin, A. A.; Grange, M. L.; Whitehouse, M. J.; Pidgeon, R. T. High resolution U-Pb ages of Ca-phosphates in Apollo 14 breccias: Implications for the age of the Imbrium impact. Meteoritics & Planetary Science. 2014, 49 (12): 2241–2251. Bibcode:2014M&PS...49.2241M. doi:10.1111/maps.12395.
Merle, R. E.; Nemchin, A. A.; Grange, M. L.; Whitehouse, M. J.; Pidgeon, R. T. High resolution U-Pb ages of Ca-phosphates in Apollo 14 breccias: Implications for the age of the Imbrium impact. Meteoritics & Planetary Science. 2014, 49 (12): 2241–2251. Bibcode:2014M&PS...49.2241M. doi:10.1111/maps.12395.