Kulkarni, Rekha P., and Akshay S. Rane. “Asymptotic Expansions for Approximate Solutions of Hammerstein Integral Equations With Green’s Function Type Kernels”. Mathematical Modelling and Analysis 19, no. 1 (February 20, 2014): 127-143. Accessed February 25, 2025. https://aviation.vgtu.lt/index.php/MMA/article/view/3273.