ADHIF en petreraldia.com

http://www.petreraldia.com/mundo-natural/adhif-en-defensa-de-los-herbivoros.html#comments

http://www.petreraldia.com/reportajes/la-llegada-del-arrui-descubre-petrer-salvaje.html#comments

http://www.diarioinformacion.com/entorno/2010/06/02/valle-lavaiol-petrer-observacion-fauna-habitat-natural/1015003.html