Travelling waves of a nonlinear reaction-diffusion model of the hepatitis B virus B. Tamko Mbopda, S. Issa, R. Guiem, S. C. Oukouomi Noutchie and H. P. Ekobena Eur. Phys. J. Plus, 138 11 (2023) 971 Published online: 02 November 2023 DOI: 10.1140/epjp/s13360-023-04534-9