Elliptic bifurcation problems that are singular in the dependent and in the independent variables

We consider singular problems of the form − Δ u = k . , u + λ h . , u in Ω, u=0 on ∂ Ω , u>0 in Ω, where Ω is a bounded C 1 , 1 domain in R n , n ≥ 2 , h : Ω × 0 , ∞ → 0 , ∞ and k : Ω × 0 , ∞ → 0 ,...