Selected Publications Clean energy consumption and economic growth nexus: asymmetric time and frequency domain causality testing in China, 2020, with Andisheh Saliminezhad, Energy Sources, Part B: Economics, Planning, and Policy, 1-12. Manufacturing Environment and Economic Growth in South Africa: Evidence from Fourier Toda Yamamoto causality test, 2020, with Andisheh Saliminezhad, International Journal of Business Environment 11 (1), 32-46. On the relationship between export and economic growth: A nonparametric causality-in-quantiles approach for Turkey, 2020, with Andisheh Saliminezhad, The Journal of International Trade & Economic Development 29 (1), 131-145. Family decision-making for educational expenditure: new evidence from survey data for Nigeria, 2019, with Glenn P. Jenkins and Hope A. Anyabolu, Applied Economics 51 (52), 5663-5673. Forecasting South African inflation using non-linear models: a weighted loss-based evaluation, 2016, with Patrick T. Kanda, Mehmet Balcilar and Rangan Gupta, Applied Economics, 48:26, 2412-2427. Price modelling of natural gas for the EU-12 countries: Evidence from panel cointegration, 2015, with Vedat Yorucu, Journal of Natural Gas Science and Engineering, 24, 464-472.