Monotone iterative method and regular singular nonlinear BVP in the presence of reverse ordered upper and lower solutions

Monotone iterative technique is employed for studying the existence of solutions to the second-order nonlinear singular boundary value problem $$ -ig(p(x)y'(x)ig)'+p(x)fig(x,y(x),p(x)y'(x)ig)=0 $$ for $0