On a result by Boccardo-Ferone-Fusco-Orsina
  Via a symmetric version of Ekeland's principle recently obtained by the author we improve, in a ball or an annulus, a result of Boccardo-Ferone-Fusco-Orsina on the properties of minimizing sequences of functionals of calculus of variations in the non-convex setting. 
Marco Squassina
math.AP