Attribution: [
Slaven P] (Dec. 13, 2016) Optimal Page Replacement Algorithm (6:57) [Video]. Retrieved from https://youtu.be/LvBpXzqKWDE
Attribution: [
Tech Academy] (Mar. 16, 2015) Least Frequently Used (LFU) Page Replacement Algo (8:14) [Video]. Retrieved https://youtu.be/uL0xP57negc