	Authors	Year	Title
	Buggisch, Meiburg & Schumann	1982	Facies, Paleogeography and Intra-Devonian stratigraphic gaps of the Asturo-Leonese Basin (Cantabrian Mts./Spain). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 163 (2): 212-230, Fig.1-7; Stuttgart.