Cole, A. T., and R. O. Olayiwola. 2019. “Variational Iteration Method for Solving Partial Differential Equation Arising from Modeling Heat Transfer in Human Tooth”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 46 (2):1-7. https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/8965.