%0 Journal Article %A %D 2017 %J International Journal of Natural Sciences Research %@ 2311-4746 %V 5 %N 1 %P 8-21 %T Quality Improvement of Petroleum Products Using Fuzzy Control Charts %M 10.18488/journal.63.2017.51.8.21 %U http://www.pakinsight.com/archive/63/01-2017/1