export(sfa)
export(dgp)
export(eff)
export(u.sfa)
export(te.eff.sfa)

S3method(coef, sfa)
S3method(print, sfa)
S3method(predict, sfa)
S3method(fitted, sfa)
S3method(logLik, sfa)
S3method(residuals, sfa)
S3method(summary, sfa)
S3method(print, summary.sfa)
S3method(eff, sfa)



