(Department of Mathematics and Informational Science,Yantai University,Yantai Shangdong 264005,China)
李沫.2n阶边值问题的正解[J].海军航空大学学报,2007,22(6):697-700LI Mo. Positive Solutions of 2n-Order Boundary Value Problems[J]. JOURNAL OF NAVAL AVIATION UNIVERSITY,2007,22(6):697-700
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