Christopher C. Ihueze and Constance C. Obiuto and Christian E. Okafor and Charles C. Okpala, Orthogonal Array Application and Response Surface Method Approach for Optimal Product Values: An Application for Oil Blending Process. journal = {International Journal of Physical and Mathematical Sciences}, [online]. World Academy of Science, Engineering and Technology. April 2013, vol. 76(4). 610 - 614 [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9593.