Rasheed, M., and A. Farhaan. “On Blow-up Time and Rate Of The Numerical Solutions of The Semilinear Heat Equation With Reaction Term”. Journal of Progressive Research in Mathematics, Vol. 9, no. 1, Aug. 2016, pp. 1333-40, http://www.scitecresearch.com/journals/index.php/jprm/article/view/868.