Freytet, P. & Galtier, J. & Ronchi, A. & Schneider, J.W. & Tintori, A. & Werneburg, R. (2002)
Early Permian continental biotafrom Southeastern Sardinia (Ogliastra and Gerrei). Bollettino della Societa Paleontologica Italiana, 41(suppl.1), 169–176
Steyer, J.S. & Escuille, F. & Pouillon, J.M. & Broutin, J. & Debriette, P. & Freytet, P. & Gand, G. & Poplin, C. & Rage, J.-C. & Rival, J. & Schneider, J.W. & Štamberg, S. & Werneburg, R. & Cuny, G. (2000)
New data on the flora and fauna from the ?uppermost Carboniferous - lower Permian of Buxières-les-Mines, Bourbon l'Archambault Basin (Allier, France). A preliminary report. Bulletin de la Société géologique de France, 171(2), 239–249
DOI: 10.2113/171.2.239