PHOENIX: Novel portable handheld combined spectrometers for Lunar surface exploration - Moral AG; Pérez C; Seoane L; Rodríguez-Pérez P; Parejo MB; Zafra J; Rodríguez JA; Canchal R; Santamaría P; Martín S; Belenguer T; Hutchinson I; et al. (Proceedings Of The International Astronautical Congress, Iac, 2024)