27Habyarimana, Jean Baptiste, Emmanuel Munyemana, and Fred Bashir Impeta. "Food Prices Volatility in Rwanda: A VAR Model."World Journal of Agricultural Research 2, no. 6 (2014): 296-302.
31Jamison, Dean, Gavin Yamey, Naomi Beyeler, and Hester Wadge. Investing in health the economic case.Doha, Qatar: World Innovation Summit for Health, 2016.