Novel analytical approximations to the nonplanar Kawahara equation and its plasma applicationsM. R. Alharthi, R. A. Alharbey and S. A. El-TantawyEur. Phys. J. Plus, 137 10 (2022) 1172DOI: https://doi.org/10.1140/epjp/s13360-022-03355-6