1. Bartlett, E. T. and Clawson, W. J. (1978). Profit, Meat Production or Efficient Use of Energy in Ranching. Journal of Animal Science
46, 812–818.
2. Dillon, J. L. (1992). The Farm as a Purposeful System. Miscellaneous Publication, 10. The University of New England. Department of Agricultural Economics and Business Management.
3. Hazell, P. and Norton, R. (1986). Mathematical Programming for Economic Analysis in Agriculture. McMillan Publishing Company: New York.
4. Koeijer, T. J., Renkema, J. A. and Mensvoort, J. J. M. (1995). Environmental-Economic Analysis of Mixed Crop-Livestock Farming. Agricultural Systems 515–530.
5. Maino, M., Alonso, R. and Iruretagoyena, T. (1987). Planificación de fincas ganaderas bovinas mediante modelos de programación multiobjetivo. Investigación Agraria. Serie Economia 2 (1), 9–30.