From

New Approach for Numerical Solution of Poisson’s Equation by Cubic Spline

M. Yousefi, J. Rashidinia, M. Yousefi, N.S BahrololoumiMofrad, Mehdi Moudi

Journal of Mathematical Sciences and Applications. 2014, 2(3), 39-42 doi:10.12691/jmsa-2-3-3