GitHub - xXxTheDarkprogramerxXx/Ps2-Classics-emulators-for-Ps4: Ps2 Classics emulators for Ps4, this will allow you to use many different versions of emulator, which could improve or decrease the compatibility
PS4 may add PS1, PS2 emulation - Gaming Discussion - Social Forums - ZIv
The PS4 can now emulate PlayStation 2 games | Ars Technica
Has Sony Already Given the PS4 a PS2 Emulator? | eTeknix
PS2 Emulation on PS4 is Impressively Good. | GBAtemp.net - The Independent Video Game Community
mast1c0re: Part 3 – Escaping the emulator – McCaulay
When playing PS2 game using PS4 emulator, it works null null at 60 fps - GIGAZINE
PS4 Now Has 500 Playable PS2 Games via Jailbreaking - MP1st
Mast1c0re: Additional emulators released (Retroarch PS2 v1.1 for PS4/PS5) - Wololo.net
How Does PS2 Emulation Work On The PS4?
How to convert PS2 games to work on the PS4. - Hackinformer