Non Linear Seemingly Unrelated Regressions (SUR) in R imposing restrictions...

R systemfit: how to run with a list of many formula...

How to estimate an SUR model in R with factors to be projected out and clustered standard errors?...

Time complexity of nlm-package in R?...

Using stargazer for systemfit objects...

R SUR regression using systemfit resulting in error: LU computationally singular: ratio of extreme e...

systemfit Error in eval(predvars, data, env) : object not found...

Error when performing Seemingly Unrelated Regression R...

R: Columnwise loop over string variables...