GAO Cheng-Hua . SOLUTIONS TO DISCRETE MULTIPARAMETER PERIODIC BOUNDARY VALUE PROBLEMS INVOLVING THE p-LAPLACIAN VIA CRITICAL POINT THEORY[J]. Acta mathematica scientia, Series B, 2014 , 34(4) : 1225 -1236 . DOI: 10.1016/S0252-9602(14)60081-3

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