Okuonghae, Robert I., and Monday Ndidi Oziegbe Ikhile. “Second Derivative General Linear Method in Nordsieck Form”. J. Numer. Anal. Approx. Theory 48, no. 1 (September 8, 2019): 62–88. Accessed April 12, 2025. https://ictp.acad.ro/jnaat/journal/article/view/1140.