1. Abadi Ghadim, A.K., and D.J. Pannell. 1999. A conceptual framework of adoption of an agricultural innovation. Agricultural Economics 21 (2): 145–154.
2. Abadi Ghadim, A.K., D.J. Pannell, and M.P. Burton. 2005. Risk, uncertainty, and learning in adoption of a crop innovation. Agricultural Economics 33 (1): 1–9.
3. Alexander, C., R. Ivanic, S. Rosch, W. Tyner, S.Y. Wu, and J.R. Yoder. 2012. Contract theory and implications for perennial energy crop contracting. Energy Economics 34 (4): 970–979.
4. Amacher, G.S., M. Ollikainen, and E. Koskela. 2009. Economics of forest resources. Cambridge: MIT Press.
5. Anderson, J., J. Dillon, and J. Hardaker. 1977. Agricultural decision analysis. Ames: State University Press.