Ion-acoustic solitons and double-layers in a plasma consisting of positive and negative ions with non-thermal electronsT. S. Gill, P. Bala, H. Kaur, N. S. Saini, S. Bansal and J. KaurEur. Phys. J. D, 31 1 (2004) 91-100DOI: https://doi.org/10.1140/epjd/e2004-00121-4