About variational approach
About variational technique
About variation
About variational approach
About variational method
About ATMS method
About Palatini formalism
About variational Monte Carlo method
About variational Bayesian method
About variational analysis
About optimization method
About analysis (mathematics)
About variational perturbation theory
About 3 dimensional variational method
About 4D-VAR
About Ritz method
About cluster variation method