D'Orazi, V., Angelou, G. C., Gratton, R. G., Lattanzio, J. C., Bragaglia, A., Carretta, E., Lucatello, S., & Momany, Y. (2014). Lithium Abundances in Globular Cluster Giants: NGC 6218 (M12) and NGC 5904 (M5). Astrophysical Journal, 791:. doi:10.1088/0004-637X/791/1/39.