Vainikko, Gennadi, and Indrek Zolk. “Fast Spline Quasicollocation Solvers of Integral Equations”. Mathematical Modelling and Analysis 12, no. 4 (December 31, 2007): 515-538. Accessed November 12, 2024. https://transport.vilniustech.lt/index.php/MMA/article/view/7156.