Positron-acoustic traveling waves solutions and quasi-periodic route to chaos in magnetoplasmas featuring Cairns nonthermal distributionB. B. Mouhammadoul, C. G. L. Tiofack, A. Alim and A. MohamadouEur. Phys. J. D, 75 2 (2021) 61DOI: https://doi.org/10.1140/epjd/s10053-020-00010-6