Estimation of models with dependent variable left-censored at zero. Null values may be caused by a selection process Cragg (1971) <doi:10.2307/1909582>, insufficient resources Tobin (1958) <doi:10.2307/1907382>, or infrequency of purchase Deaton and Irish (1984) <doi:10.1016/0047-2727(84)90067-7>.
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Maintainer | |
License | GPL (>=2) |
Version | 1.3-2 |
URL | https://www.R-project.org |
Package repository | View on GitHub |
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