1. Alberdi MT, Azanza B (1997) Comentarios al artículo Magnetoestratigrafía preliminar de los materiales pliocenos de la cubeta de Villarroya (Sierra de Cameros, La Rioja) de E. Pueyo Morer, A. Muñoz Jiménez y J. M. Parés (1996). Geogaceta 22:7–8
2. Agustí J, Oms O (2001) On the age of the last hipparionine faunas in western Europe. C R Acad Sci Paris 332:291–297
3. Albianelli A, Azzaroli A, Bertini A, Ficcarelli G, Napoleone G, Torre D (1997) Paleomagnetic investigations in the Upper Valdarno Basin (Central Italy): Calibration of an early Villafranchian fauna. Riv Ital Paleont Stratigr 103:111–118
4. Anadón P, Burjachs F, Martín M, Rodríguez-Lázaro J, Robles F, Utrilla R, Vazquez A (2002a) Paleoenvironmental evolution of the Pliocene Villarroya Lake, northern Spain. A multidisciplinary approach. Sediment Geol 148:9–27
5. Anadón P, Gliozzi E, Mazzini I (2002b) Paleoenvironmental reconstruction of marginal marine environments from combined paleoecological and geochemical analyses on ostracods. In: Holmes JA, Chivas AR (eds) The ostracods: applications in quaternary research. AGU-Washington/DC. Geophysical Monograph 131, pp 227–247