Samira Muhammad Salih and Hozan Taha Abdalla 2017. Comparison between Biexponential and Robust Biexponential Nonlinear Models, Using Simulation. The Scientific Journal of Cihan University– Sulaimaniya. 1, 3 (May 2017), 2-16. DOI:https://doi.org/10.25098/1.3.32.