Biharmonic equation, Critical exponent, Multiple solutions.,"/>
Existence of muliple positive solution for Δ<sup>2 α</sup>=λμ+μ<sup>(N+4)/(N-4)</sup>+μf(x)
Guo Zhenhua, Deng Yinbin. Existence of muliple positive solution for Δ2 α=λμ+μ(N+4)/(N-4)+μf(x) [J].Acta mathematica scientia,Series A, 1999, 19(2): 138-148.