“…Please refer to [16,18,20,21,23] and the references therein. There have been many works devoted to studying the existence of positive solutions of (1.3) in R n after the first contribution by Ni [20] in 1982, see [2,6,7,8,11,12,23] and the references therein. One of the features of the equation is that (1.3) can posses infinitely many solutions as long as the exponent p and the dimension n are large enough.…”