List of citations in Numdam for : The structure of extremals of a class of second order variational problems

Annales de l'I.H.P. Analyse non linéaire, Volume 16 (1999) no. 5, pp. 593-629.


ESAIM: Control, Optimisation and Calculus of Variations, Volume 15 (2009) no. 4, pp. 872-894.


Annales de l'I.H.P. Analyse non linéaire, Volume 19 (2002) no. 3, pp. 343-370.