Natiq, M. I., M. Imanova, and V. Ibrahimov. “Application of A Second Derivative Multi-Step Method to Numerical Solution of Volterra Integral Equation of Second Kind”. Pakistan Journal of Statistics and Operation Research, Vol. 8, no. 2, Mar. 2012, pp. 245-58, doi:10.18187/pjsor.v8i2.294.