期刊
JOURNAL OF DIFFERENTIAL EQUATIONS
卷 221, 期 1, 页码 246-255出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jde.2005.03.006
关键词
nonlocal problems; Kirchhoff's equation; Yang index; minimax eigenvalues; variational; methods; Morse theory; critical groups