References
- Cameron , A. C. and Trivedi , P. K. 1986 . Econometric models based on count data: comparisons and implications of some estimators and tests . Journal of Applied Econometrics , 1 : 29 – 53 .
- Cragg , J. G. 1971 . Some statistical models for limited dependent variables with applications to the demand for durable goods . Econometrica , 39 : 829 – 844 .
- Creel , M. D. and Loomis , J. B. 1990 . Theoretical and empirical advantages of truncated count data estimators for analysis of deer hunting in California . American Journal of Agricultural Economics , 72 : 434 – 441 .
- Gurmu , S. and Trivedi , P. K. 1996 . Excess zeros in count models for recreational trips . Journal of Business and Economic Statistics , 14 : 469 – 477 .
- Jones , A. M. 1989 . A double-hurdle model of cigarette consumption . Journal of Applied Econometrics , 4 : 23 – 39 .
- Mullahy , J. 1986 . Specification and testing of some modified count data models . Journal of Econometrics , 33 : 341 – 365 .
- Pohlmeier , W. and Ulrich , V. 1995 . An econometric model of the two-part decision-making process in the demand for health care . Journal of Human Resources , 30 : 339 – 361 .
- Tobin , J. 1958 . Estimation of relationships for limited dependent variables . Econometrica , 26 : 24 – 36 .