1. Paleomagnetism of the mid-Devonian Kurgasholak Formation, southern Kazakhstan: constraints on the Devonian paleogeography and oroclinal bending of the Kazakhstan volcanic arc;Abrajevitch;Tectonophysics,2007
2. Ordovician Fossils of Argentina. Secretaría de Ciencia Y Tecnología;Benedetto,2003
3. First record of the Hirnantian (Upper Ordovician) δ13C excursion in the north American Midcontinent and its regional implications;Bergström;Geol. Mag.,2006
4. The Upper Ordovician Guttenberg δ13C excursion (GICE) in North America and Baltoscandia: occurrence, chronostratigraphic significance, and paleoenvironmental relationships;Bergström;Geol. Soc. Am. Spec. Pap.,2010
5. Les Grès Paléozoïque inférieur au Sahara;Beuf;Publications de l’Institut français du petrole,1971