Authors Year Title
Moore, Neves & Wagner 1971 The stratigraphy of Namurian and Westphalian rocks in the Villamanín area of Northern León, N.W. Spain. [Moore,L.R., Neves,R., Wagner,R.H. & Wagner-Gentis,C.H.T.]
Trabajos de Geología, 3: 307-363, fig.1-7, tab.1-2, pl.1-8; Oviedo.