Calio, F., E. Marchetti, and R. Pavani. “Peculiar Spline Collocation Method for Solving Rough and Stiff Delay Differential Problems”. Rev. Anal. Numér. Théor. Approx., vol. 33, no. 1, Feb. 2004, pp. 25-37, doi:10.33993/jnaat331-756.