49. | | Autor: Cai, Mattia COTA(S): RE-1822 | |
50. | | Autor: Pearce, Philip L. COTA(S): 19945 | |
51. | | Autor: Martínez-Roget, Fídel Coautor: ; Pawlowska, Ewa Rodríguez, Xosé A. | |
52. | | Autor: Arbelo-Pérez, Marta Coautor: ; Arbelo, Antonio Pérez-Gómez, Pilar COTA(S): RE-1193 | |