Solitary waves solutions and local conserved vectors for extended quantum Zakharov–Kuznetsov equationI. Humbu, B. Muatjetjeja, T. G. Motsumi and A. R. AdemEur. Phys. J. Plus, 138 9 (2023) 873DOI: https://doi.org/10.1140/epjp/s13360-023-04470-8