WASET
Tiznado, J. , Martínez, R. , Wilson, C. , Barreras, J. , González, E. , Villalvazo, J.. "Effect of Size of the Step in the Response Surface Methodology using Nonlinear Test Functions". World Academy of Science, Engineering and Technology, Open Science Index 66, International Journal of Industrial and Manufacturing Engineering, (2012), 6(6), 1091 - 1096.