Kinetic study of ion-acoustic waves in non-thermal Vasyliunas–Cairns distributed plasmas M. A. Shahzad, Aman-ur-Rehman, S. Mahmood, M. Bilal and M. Sarfraz Eur. Phys. J. Plus, 137 2 (2022) 236 Published online: 17 February 2022 DOI: 10.1140/epjp/s13360-022-02463-7