Hegazy, Mohammed. 2015. “Design and Implementation of Inferential (IQ) Model to Predict I-C4 Percentage and to Save Fuel Gas Consumption in Gas Train De-Propaniser Tower”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 24 (1):156-64. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/4431.