List of citations in Numdam for : On ε-optimal controls for state constraint problems

Annales de l'I.H.P. Analyse non linéaire, Volume 17 (2000) no. 4, p. 473-502

Ancona, Fabio; Bressan, Alberto

Annales de l'I.H.P. Analyse non linéaire, Volume 24 (2007) no. 2, p. 279-310

Clarke, Francis H.; Rifford, Ludovic; Stern, R. J.

ESAIM: Control, Optimisation and Calculus of Variations, Volume 7 (2002), p. 97-133