Keshavarz Afshar, R., Alipour, A., Hashemi, M., Ansari Jovini, M. and Pimentel, D. (2013) “Energy inputs-yield relationship and sensitivity analysis of pistachio (Pistacia vera L.) production in Markazi Region of Iran”, Spanish Journal of Agricultural Research, 11(3), pp. 661-669. doi: 10.5424/sjar/2013113-3877.