“…In order to avoid the use of strong maximum principle and monotonicity assumption on g(x, •), a new definition of nonnegative solutions have been provided and existence, stability and uniqueness results for these notions are proved in [23,24,25]. Further contributions to semilinear elliptic equations having this type of singularity are contained for example in [1,2,3,5,14,15,16,28,29].…”