GitHub - BASLQC/gPSP: Exophase's original GBA PSP emulator, the final version 0.9 made in 2007. This is the basis of many unofficial forks and ports, such as gPSP-kai and gPSP-mod.
GBA Bios - Gameboy Advance BIOS - Download
Install the GBA/PS1 BIOS - FunKey Project Documentation
PSP Tutorial: How to Play GBA on PSP (uo gpSP Kai 3.4) | HD - YouTube
PSPVBA PSP - GameBrew
GameBoy Advance (GBA) Emulators for PSP - CDRomance
GameBoy Advance (GBA) Emulators for PSP - CDRomance