High precision differential abundance measurements in globular clusters: chemical inhomogeneities in NGC 6752 - Yong, David; Moreno, Jorge Luiz Meléndez; Grundahl, Frank; Roederer, Ian U; Norris, John E; Milone, A. P; Marino, A. F; Coelho, P; McArthur, Barbara E; Lind, K; Collet, R; Asplund, Martin (Monthly Notices of The Royal Astronomical Society, 2013)