Garcia-Ruiz J.M.  2000.  Procesos y formas periglaciares en la montana mediterranea. Instituto de Estudios Turolenses, Teruel. :63-79.

Garcia-Ruiz J.M, Valero-Garces B.L.  1998.  Historical geomorphic processes and human activities in the Central Spanish Pyrenees. Mountain Research and Development. 18(4):309-320.