car, Formula, MASS, maxLik, methods, mvtnorm, Rcpp, Rdpack (>=
0.7), sandwich, stats, texreg, utils
car, Formula, graphics, MASS, maxLik, methods, mvtnorm, Rcpp,
Rdpack (>= 0.7), sandwich, stats, texreg, utils
gridExtra, gridGraphics, sampleSelection, scales, testthat
(>= 3.0.0)