Spin and pseudospin symmetries of a relativistic fermion in an elastic medium with spiral dislocationsS. Zare, H. Hassanabadi, G. J. Rampho and A. N. IkotEur. Phys. J. Plus, 135 9 (2020) 748DOI: https://doi.org/10.1140/epjp/s13360-020-00779-w