zipath and predprob were derived from zeroinfl (Achim Zeileis) and predprob.R (Simon Jackman), respectively  in package pscl
Author: Simon Jackman, with contributions from Alex Tahk, Achim Zeileis, Christina Maimone and Jim Fearon
License GPL-2

glmregNB derived from glm.nb in package MASS 
Authors@R: c(person("Brian", "Ripley", role = c("aut", "cre", "cph"),
        email = "ripley@stats.ox.ac.uk"), person("Kurt", "Hornik", role
        = "trl", comment = "partial port ca 1998"), person("Albrecht",
        "Gebhardt", role = "trl", comment = "partial port ca 1998"),
        person("David", "Firth", role = "ctb"))
License: GPL-2 | GPL-3

convexMin modified from ncvreg version: 3.1-0
Author: Patrick Breheny
License GPL-2

several functions inspired by package sandwich version 2.3.0
Author: Thomas Lumley [aut], Achim Zeileis [aut, cre] 
Maintainer: Achim Zeileis <Achim.Zeileis at R-project.org> 
License: GPL-2 

nonzeroCoef and plotCoef are from glmnet_3.0-0 which doesn't export     nonzeronCoef and plotCoef function
 Authors@R: c(person("Jerome", "Friedman", role=c("aut")),
           person("Trevor", "Hastie", role=c("aut", "cre"), email="hastie@stanford.edu")
           person("Rob", "Tibshirani", role=c("aut")),
           person("Balasubramanian", "Narasimhan", role=c("aut")),
           person("Noah", "Simon", role=c("aut")),
           person("Junyang", "Qian", role=c("ctb")))
License GPL-2

