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We study the existence of multi-bump of positive solutions of the following nonlinear elliptic problem: -△u = up in Ω t,u > 0 in Ωt,u = 0 on (6)Ω t Here 1 < p < N+2/N-2 when N ≥ 3,1 < p <∞1 when N = 2 and t (∈) RN is a tubular domain which is expanding as t → ∞.