SEARCH Articles Figures Tables Complex nonlinear least squares fitting Curve fitting with nonlinear regression Curve fitting with nonlinear regression analysis Curve fitting, nonlinear regression analysis Frequency domain nonlinear least-squares fitting Least squares method nonlinear fits Nonlinear fit Nonlinear fitting algorithm Nonlinear least-squares fit Nonlinear least-squares fitting Nonlinear least-squares fitting time domain Recent Nonlinear Fitting Methods Regression for Nonlinear Data the Quadratic Fitting Function