The First and Second Variational Formulas of the Energy
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2007 ◽
Vol 87
(5)
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pp. 453-494
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1962 ◽
Vol 14
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pp. 540-551
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2001 ◽
Vol 130
(7)
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pp. 2115-2123
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2012 ◽
Vol 479-481
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pp. 1365-1370
1980 ◽
Vol 3
(1)
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pp. 114-143
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1989 ◽
Vol 12
(3)
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pp. 283-295
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2011 ◽
Vol 22
(07)
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pp. 887-906
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