Lithium in the globular cluster NGC 6397. Evidence for dependence on evolutionary status
Journal article published in 2009 by
J.~I I. González Hernández,
P. Bonifacio,
E. Caffau,
M. Steffen,
H.-G. Ludwig,
N.~T T. Behara,
L. Sbordone,
R. Cayrel,
S. Zaggia 
