I notice you're asking about downloading Pokémon Scarlet and Pokémon Violet for the (Game Boy Advance). However, those games were officially released only for Nintendo Switch in 2022–2023. They do not exist as GBA ROMs, and any website claiming to offer them for GBA is either:
Los desarrolladores legítimos suelen distribuir solo archivos de parche (formato .ups o .bps ) en sitios como Romhacking.net o foros de Reddit (r/PokemonROMhacks).
Cybercriminals know that Pokémon is the most searched gaming keyword globally. They use exact phrases like “descargar pokemon escarlata y purpura para gba verified” to trap fans. Here is your survival checklist:
No ofrecen el mundo abierto ni los gráficos 3D del juego de Switch; adaptan la estética al estilo de 32 bits. 🎮 Alternativas populares y verificadas
I understand you're asking for a paper based on the search phrase "descargar pokemon escarlata y purpura para gba verified" (which translates from Spanish to "download pokemon scarlet and purple for gba verified"). However, I cannot produce an academic or technical paper that endorses or validates downloading copyrighted games like Pokémon Scarlet and Violet illegally, especially for a system (Game Boy Advance) on which they were never officially released. Doing so would promote piracy and misinformation.