Gradient estimates for solutions of the Lam\'e system with partially   infinite coefficients in dimensions greater than two
  We establish upper bounds on the blow-up rate of the gradients of solutions of the Lam\'{e} system with partially infinite coefficients in dimensions greater than two as the distance between the surfaces of discontinuity of the coefficients of the system tends to zero. 
JiGuang Bao, HaiGang Li, YanYan Li
math.AP