Anwar Hamdan Al-Assaf, et al. “UNATTENDED FLUID TANK PUMP CONTROL SYSTEM USING PID CONTROLLER WITH ADAPTABLE USER-DEFINED SETUPS”. International Journal of Renewable Energy and Environmental Sustainability (IJREES), vol. 1, no. 1, Apr. 2023, pp. 12-25, https://zapjournals.com/Journals/index.php/ijrees/article/view/237.