Keyword: nonlocal problems

Papers related to keyword:

• E. Di Nezza - G. Palatucci - E. Valdinoci (Bull. Sci. math.)
  Hitchhiker's guide to the fractional Sobolev spaces (2012)
• E. Stepanov (J. Nonlinear and Convex Anal.)
  Relaxation of optimal control problems with shifted controls (2002)