ICDAR 2023 Competition on Detection and Recognition of Greek Letters on Papyri. - Mathias Seuret; Isabelle Marthot-Santaniello; Stephen A. White; Olga Serbaeva Saraogi; Selaudin Agolli; Guillaume Carrière; Dalia Rodríguez-Salas; Vincent Christlein (ICDAR (2), 2023)