Analysis of activation energy and melting heat transfer in MHD flow with chemical reactionM. Javed, A. A. Alderremy, M. Farooq, Aisha Anjum, S. Ahmad and M. Y. MalikEur. Phys. J. Plus, 134 6 (2019) 256DOI: https://doi.org/10.1140/epjp/i2019-12744-5