中国科学院数学与系统科学研究院期刊网
ISSN 1439-8516 CN 11-2039/O1
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1985, Vol. 1(4): 348-355 DOI: 10.1007/BF02564843
Ekeland’s variational principle and the mountain pass lemma
Shi Shuzhong
Nankai University
Received
1984-08-09
Revised
1985-06-22
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