Muttoni, Giovanni; Scardia, Giancarlo; Kent, Dennis V.; Swisher, Carl C.; Manzi, Giorgio (2009). "Pleistocene magnetochronology of early hominin sites at Ceprano and Fontana Ranuccio, Italy". Earth and Planetary Science Letters. 286 (1–2): 255–268. Bibcode:2009E&PSL.286..255M. doi:10.1016/j.epsl.2009.06.032. hdl:2434/164132.
Manzi, Giorgio; Magri, Donatella; Milli, Salvatore; Palombo, Maria Rita; Margari, Vasiliki; Celiberti, Vincenzo; Barbieri, Mario; Barbieri, Maurizio; Melis, Rita T.; Rubini, Mauro; Ruffo, Massimo; Saracino, Barbara; Tzedakis, Polychronis C.; Zarattini, Annalisa; Biddittu, Italo (2010). "The new chronology of the Ceprano calvarium (Italy)". Journal of Human Evolution. 59 (5): 580–585. doi:10.1016/j.jhevol.2010.06.010. PMID20832845.
Muttoni, Giovanni; Scardia, Giancarlo; Kent, Dennis V.; Swisher, Carl C.; Manzi, Giorgio (2009). "Pleistocene magnetochronology of early hominin sites at Ceprano and Fontana Ranuccio, Italy". Earth and Planetary Science Letters. 286 (1–2): 255–268. Bibcode:2009E&PSL.286..255M. doi:10.1016/j.epsl.2009.06.032. hdl:2434/164132.
Muttoni, Giovanni; Scardia, Giancarlo; Kent, Dennis V.; Swisher, Carl C.; Manzi, Giorgio (2009). "Pleistocene magnetochronology of early hominin sites at Ceprano and Fontana Ranuccio, Italy". Earth and Planetary Science Letters. 286 (1–2): 255–268. Bibcode:2009E&PSL.286..255M. doi:10.1016/j.epsl.2009.06.032. hdl:2434/164132.