Dell`Isola, Francesco, editor
Variational models and methods in solid and fluid mechanics
Springer, 2011
 eBooks
Friedman, Avner
Variational principles and free-boundary problems
John Wiley & Sons, 1982
 Buku Teks
Valid, R.
The nonlinear theory of shells through variational principles : from elementary algebra to differential geometry / R. Valid
John Wiley & Sons, 1995
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Lanczos, Cornelius
The variational principle of mecanics/by Cornelius Lanczos
Toronto University of Toronto Press 1966,
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Synge, John L.
Principles of mechanics
McGraw-Hill, 1959
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