R. G. Gratton, P. Bonifacio, A. Bragaglia, E. Carretta, V. Castellani, M. Centurion, A. Chieffi, R. Claudi, G. Clementini, F. D'Antona, S. Desidera, P. François, F. Grundahl, S. Lucatello, P. Molaro, L. Pasquini, C. Sneden, F. Spite, O. Straniero,
The O-Na and Mg-Al anticorrelations in turn-off and early subgiants in globular clusters Astronomy and Astrophysics. ,vol. 369, pp. 87- 98 ,(2001) ,
10.1051/0004-6361:20010144