REFERENCES
- Bigsten , A. and Ndung'U , N. S. 1992 . “ Kenya ” . In Structural adjustment and the African farmer , Edited by: Duncan , A. and Howell , J. London : James Carey .
- Casley , D. J. and Lury , D. A. 1987 . Data collection in developing countries , Oxford : Clarendon Press .
- Fare , R. , Grosskopf , S. , Lindgren , B. and Roos , P. 1992 . Changes in Swedish Pharmacies 1980–1989: a non-parametric Malmquist Approach . The Journal of Productivity Analysis , 3 : 85 – 101 .
- Frisvold , F. and Ingram , K. 1995 . Sources of agricultural productivity growth and stagnation in sub-Saharan Africa . Agricultural Economics , 13 : 51 – 61 .
- Heyden , G. 1986 . “ The invisible economy of smallholder agriculture in Africa ” . In Understanding Africa's rural households and farming systems , Edited by: Moock , J. L. Boulder and London : Westview .
- Jaetzold , R. and Schmidt , H. 1983 . Natural conditions and farm management: Farm management handbook of Kenya , Vol. 2 , Nairobi : Ministry of Livestock Development .
- Lingard , J and Rayner , A. J . 1975 . Productivity growth in agriculture: a measurement framework . Journal of Agricultural economics , 24 : 87 – 104 .
- Malmquist , S. 1953 . Index numbers and indifference curves . Trabajos de Estatistica , 4 : 209 – 242 .
- Nyariki , D. M. 1997 . Resource availability and productivity, farmer efficiency, and household food security in semi-arid Kenya Ph.D. thesis, Department of Agricultural and Food Economics, University of Reading.
- Pinstrup-Andersen , P. 1994 . Getting early intervention efforts rights—the key role of agricultural development in the Third World food security , Washington, DC : IFPRI . Reprint No. 287.
- Republic of Kenya (ROK) . 1993 . “ Sessional Paper No. 3 on National Food Policy ” . In Office of the Vice President and Ministry of Planning and National Development , Nairobi : Government Printer .
- Staatz , J. M. and Eicher , C. K. 1986 . “ Agricultural development ideas in historical perspective ” . In Food in sub-Saharan Africa , Edited by: Hansen , A. and McMillan , D. E. Boulder, Colorado : Lynne Rienner .
- Thirtle , C. , Atkins , J. , Bottomley , P. , Gonese , N. , Govereh , J. and Khatri , Y. 1993 . Agricultural productivity in Zimbabwe, 1970–90 . Economic Journal , 103 : 474 – 481 .
- Tiffen , M. , Mortimore , M. and Gichuki , F. 1994 . More people, less erosion: environmental recovery in Kenya , Chichester : John Wiley .
- Wiggins , S. 1995 . Change in African farming systems between the mid-1970s and mid-1980s . Journal of International Development , 7 : 807 – 848 .