Pocket formula for fusion barriers of superheavy nuclei H. C. Manjunatha, K. N. Sridhar, N. Nagaraja and N. Sowmya Eur. Phys. J. Plus, 133 6 (2018) 227 Published online: 19 June 2018 DOI: 10.1140/epjp/i2018-12057-3