variational-integral perturbation method
A Most Probable Point Perturbation Method
asymoptotic singular perturbation method
cavity perturbation method
Conditional Dynamic Perturbation Method
direct nodal perturbation method
direct perturbation method
electric current perturbation method
energy perturbation method
free-parameter perturbation method
generalized perturbation method
high-order small perturbation method
homotopy perturbation method
Improved perturbation method
infrared thermal perturbation method
initial condition perturbation method
interative perturbation method
interpolate perturbation method
interpolation perturbation method