Comments on 'Analytical soliton solutions of Biswas–Milovic equation in Kerr and non-Kerr law media, Optik 157 (2018) 993–1002'

The authors in [1] obtained exact solutions of the Biswas and Milovic equation with Kerr law, parabolic law, power law and dual power law nonlinearity using exp(− ϕ(e))-expansion method. The present comment concerns some doubtful results obtained and presented by authors in paper [1] .