Dell`Isola, Francesco
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
 Buku Teks
Synge, John L.
Principles of mechanics
McGraw-Hill, 1959
 Buku Teks
Ito, Kazufumi
Lagrange multiplier approach to variational problems and applications
Society for Industrial and Applied Mathematics, 2008
 eBooks