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    Existence of positive solutions for second order discrete periodic boundary value problems with sign-changing Green′s function(格林函数变号时二阶离散周期边值问题正解的存在性)

    Existence of positive solutions for second order discrete periodic boundary value problems with sign-changing Green′s function(格林函数变号时二阶离散周期边值问题正解的存在性)... de réir HUWenfeng(胡文丰), WANGJingjing(王晶晶)

    Foilsithe / Cruthaithe 2022-11-01
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