Authors Year Title
Higgins, Wagner-Gentis & Wagner 1964 Basal Carboniferous Strata in Part of Northern León, NW. Spain: Stratigraphy, Conodont and Goniatite Faunas.
Bulletin de la Societé belge de Géologie, Paléontologie, Hydrologie, 72 (2): 205-249, fig.1-5, pl.1-5; Bruxelles.
Kullmann, Wagner & Winkler_Prins 2007 Significance for international correlation of the Perapertú Formation in Northern Palencia, Cantabrian Mountains. Tectonic/stratigraphic context and description of Mississippian and Upper Bashkirian Goniatites.
Revista Española de Paleontología, 22 (2), 127-145, 8 fig.,  Madrid.
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.
Wagner, Jones & Spinner 1970 The upper Cantabrian rocks near Inguanzo, eastern Asturias, Spain.
Congrès et Colloques de l'Université de Liège, 55: 465-486, 2 figs., 2 tabl., pls.30-33, Liège.
Wagner, Winkler_Prins & Riding 1971 Lithostratigraphic units of the lower part of the Carboniferous in Northern León, Spain [with a Note on some Goniatite Faunas by C.H.T. Wagner-Gentis].
Trabajos de Geología, 4: 603-663, fig.1-10, pl.1-3; Oviedo.
Wagner & Bowman 1983 The position of the Bashkirian/Moscovian boundary in West European chronstratigraphy.
Newsletters on Stratigraphy, 12 (3): 132-162, 8 fig., 4 tabl., Stuttgart.
Wagner & Winkler_Prins 2000 Carboniferous stratigraphy of the Sierra del Brezo in northern Palencia: evidence of major uplifts.
Trabajos de Geología, 21: 385-403, 6 fig., Ovedo.