1. Shape preserving constrained data using spline functions;Abbas;Int. J. Appl. Math. Stat.,2012
2. Positivity preserving interpolation of positive data by cubic trigonometric spline;Abbas;Mathematika,2011
3. M.N.H. Awang, M. Abbas, A.A. Majid, Ali J. Md., Data visualization for constrained data using C2 Rational Cubic Spline, in: Proceedings of the World Congress on Engineering and Computer Science, vol. 1, San Francisco, USA, 2013, 1–6.
4. Fractal functions and interpolations;Barnsley;Constr. Approx.,1986
5. Fractals Everywhere;Barnsley,1988