Jwamer, K. H. F., F. K. Hamasalh, and R. C. Karem. “The Study Focuses on Lacunary Interpolation and Error Estimations by Spline Function”. Basrah Researches Sciences, vol. 50, no. 2, Dec. 2024, pp. 146-5, doi:10.56714/bjrs.50.2.12.