A study of optical solitons with Kerr and power law nonlinearities by He’s variational principleEngin Topkara, Daniela Milovic, Amarendra K. Sarma, Fayequa Majid and Anjan BiswasJ. Eur. Opt. Soc.-Rapid Publ., 4 (2009) 09050DOI: https://doi.org/10.2971/jeos.2009.09050
