REFERENCES
- AKLILU , B. 1980 . The diffusion of fertiliser in Ethiopia: Pattern, determinants, and implication . The Journal of Developing Areas , 14 : 387 – 399 .
- AMEMIYA , T. 1984 . Tobit models: A survey. . Journal of Econometrics , 24 : 3 – 61 .
- AYANA , I. 1985 . An Analysis of Factors Affecting the Adoption and Diffusion Patterns of Packages of Agricultural Technologies in Subsistence Agriculture: A Case Study in Two Extension Districts of Ethiopia M.Sc. Thesis, Addis Ababa University
- BOCKSTAEL , N. E. , STRAND , I. E. , MCCONNELL , K. E. and ARSANJANI , F. 1990 . Sample selection bias in the estimation of recreation demand functions: An application to sportfishing . Land Economics , 66 : 40 – 49 .
- BYERLEE , D. and DE POLANCO , E. H. 1986 . Farmers' stepwise adoption of technological packages: Evidence from the Mexican Altiplano . American Journal of Agricultural Economics , 68 : 519 – 27 .
- COADY , D. P. 1995 . An empirical analysis of fertiliser use in Pakistan . Economica , 62 : 213 – 234 .
- COHEN , J. M. 1975 . Effects of green revolution strategies on tenants and small-scale landowners in the Chilalo region of Ethiopia . The Journal of Developing Areas , 9 : 335 – 338 .
- CRAGG , J. 1971 . Some statistical models for limited dependent variables with application to the demand for durable goods . Econometrica , 39 : 829 – 844 .
- CSA . 1995 . Agricultural sample survey 1994/95 (1987 E.C.) Report on Agricultural Practices (Private Peasant Holdings, Main Seaso) Volume II. Statistical Bulletin No. 132, Addis Ababa: CSA
- DADI , L. 1998 . Adoption and diffusion of agricultural technologies: Case of east and west Shewa zones, Ethiopia Ph.D. Thesis, The University of Manchester
- DEMEKE , M. 1994 . Fertiliser procurement, distribution and consumption in Ethiopia Paper presented at the Fourth Annual Conference on the Ethiopian Economy organised by the Ethiopian Economic Association, 26–29 November 1994, Debre-zeit
- GHOSH , S. K. 1991 . Econometrics theory and applications Prentice-Hall International Editions .
- GREENE , W. H. 1996 . LIMDEP user's manual and reference guide version 7.0 New York Economic Software, Inc .
- HECKMAN , J. 1976 . The common structure of statistical models of truncation, sample selection and limited dependent variables and a simple estimation for such models . Annals of Economic and Social Measurement , 5 : 475 – 492 .
- JHA , D. and HOJJATI , B. 1994 . Fertiliser use on smallholder farms in Eastern Province, Zambia Research Report 94. Washington, D.C.: International Food Policy Research Institute (IFPRI)
- JONES , A. M. and YEN , S. T. 1994 . A box-cox double hurdle model IFS Working Paper W94/6 and DERS Discussion Paper No. 94/5
- KEBEDE , Y. , GUNJAL , K and COFFIN , G. 1990 . Adoption of new technologies in Ethiopian agriculture: The base of Tegulet-Bulga district, Shewa Province . Agricultural Economics , 4 : 27 – 43 .
- MCDONALD , J. F. and MOFFAT , R. A. 1980 . The uses of Tobit analysis . Review of Economics and Statistics , 62 : 318 – 321 .
- MEKURIA , M. 1996 . “ Technology development and transfer in Ethiopian agriculture: An empirical evidence. ” . In Food security, nutrition and poverty alleviation in Ethiopia Edited by: Demeke , M. , Amha , W. , Ehui , S. and Zegeye , T. Proceedings of the Inaugural and First Annual Conference of the Agricultural Economics Society of Ethiopia 8–9 June 1995. Addis Ababa, Ethiopia
- OLANA , G. , STORK , H. and DEMEKE , M. 1995 . Farmers' response to new technology in coffee production: the case of small farmers in Ghimbi CIPA, Wellega. Horticultural Systems in Tropics , Working Paper Series No. 1. University of Hanover Institute of Horticultural Economics .
- SEBOKA , B. , NEGASSA , A. , MWANGI , W. and MUSSA , A. 1991 . Adoption of maize production technologies in the Bako area, Western Shewa and Welega region of Ethiopia Research Report No. 16. Addis Ababa: Institute of Agricultural Research
- STATACORP . 1997 . Stata statistical software: release 5.0 College Station, TX : Stata Corporation .
- TECKLE , T. 1975 . Application of multivariate probit analysis to adoption model of new agricultural practices . Ethiopian Journal of Development Research , 2 : 43 – 56 .
- TOBIN , J. 1958 . Estimation of relationships for limited dependent variables . Econometrica , 26 : 24 – 36 .
- VEALL , M. R. and ZIMMERMANN , K. F. 1994 . Goodness of fit measures in the Tobit model . Oxford Bulletin of Economics and Statistics , 56 : 485 – 499 .
- WAKTOLA , A. 1980 . Assessment of the diffusion and adoption of agricultural technologies in Chilalo . Ethiopian Journal of Agricultural Science , 2 : 51 – 68 .
- WORLD BANK . 1995 . Ethiopia: national fertiliser sector project Report No. 13722-ET. Agricultural and Environment Division, Eastern Africa Department, African Region
- YIRGA , C. , SHAPIRO , B. I. and DEMEKE , M. 1996 . Factors influencing adoption of new wheat technologies in Wolmera and Addis Alem areas of Ethiopia . Ethiopian Journal of Agricultural Economics , 1 : 63 – 84 .