Lakehal, D., Labois, M., Caviezel, D., & Belhouachi, B. (2011). Transition of Gas-Liquid Stratified Flow in Oil Transport Pipes. The Journal of Engineering Research, 8(2), 49. https://doi.org/10.24200/tjer.vol8iss2pp49-58 UR, R. S., Hassan, M. U., & Fahad, M. (2025). Improved ADRC-Based Integral Flux Observer for IPMSM Sensorless Control. The Journal of Engineering Research, 21(2), 163-172. https://doi.org/10.53540/tjer.vol21iss2pp163-172