Permafrost research collaboration between PYRN Iberian members (Spain and Portugal) - Alfonso Pisabarro; Néstor Campos; Manuel Gómez-Lende; Antonio Molina; Ramón Pellitero-Ondicol; María González-García; Alberto Merino; David Gallinar; Jesús Ruiz-Fernández; Cristina García-Hernández; Jonathan Hall-Riaza; Pedro Carrera; et al. (XI International Conference on Permafrost, 2016)