source
Montgomery, D.C., Peck, E.A., and Vining, C.G. (2001)
Introduction to Linear Regression Analysis. 3rd Edition, John Wiley and Sons.reference
Coteron, Sanchez, Matinez, and Aracil (1993)
Optimization of the Synthesis of an Analogue of Jojoba Oil Using
a Fully Central Composite Design. Canadian Journal of Chemical
Engineering.