“Numerical Treatment of Volterra integral Equation of the 2nd kind Using 6th order of Runge-Kutta method” (2020) International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) DOI: 10.31695/IJERAT, 6(12), pp. 17–23. doi:10.31695/IJERAT.2020.3673.