Ar-Ridho, Muzayin, AND 		Irawan, Denny.
" Tuning PID Steam Drum Level Controller pada Boiler 52-B-101A di PT Pertamina (Persero) RU VI Balongan BERBASIS ALGORITMA FIREFLY" <em>E-Link: Jurnal Teknik Elektro dan Informatika</em> [Online], Volume 13 Number 2 (13 November 2018)