[1]
Liu, H. and Chan, K.-S. 2010. Introducing COZIGAM: An R Package for Unconstrained and Constrained Zero-Inflated Generalized Additive Model Analysis. Journal of Statistical Software. 35, 11 (Jul. 2010), 1–26. DOI:https://doi.org/10.18637/jss.v035.i11.