Na-O anticorrelation and horizontal branches - II. The Na-O anticorrelation in the globular cluster NGC 6752E. Carretta, A. Bragaglia, R. G. Gratton, S. Lucatello and Y. MomanyA&A, 464 3 (2007) 927-937DOI: https://doi.org/10.1051/0004-6361:20065208