Tshiakambila, E. K., and J. Chisasa. “Food Inflation and Passenger Vehicle Purchases in South Africa: Cointegration, Short Run Dynamics and Causality”. Journal of Economics and Behavioral Studies, Vol. 9, no. 5(J), Oct. 2017, pp. 122-34, doi:10.22610/jebs.v9i5(J).1914.