The topological complexity of a natural class of norms on Banach spaces. - Gilles Godefroy; Mohammed Yahdi; Robert Kaufman (Ann. Pure Appl. Log., 2001)

Strong Subdifferentiability of Convex Functionals and Proximinality. - Gilles Godefroy; V. Indumathi; Francois Lust-Piquard (J. Approx. Theory, 2002)

Proximinality and renormings: Some new examples. - Gilles Godefroy; V. Indumathi (J. Approx. Theory, 2013)