Definition and geochronologic/chronostratigraphic rank of the term Quaternary. Recommendations by the Quaternary Task Group jointly of the International Commission on Stratigraphy (ICS, of the International Union of Geological Sciences, IUGS) and of the International Union for Quaternary Research (INQUA) - 2005
ICS request to IUGS Executive regarding Definition and Rank of Quaternary - 2005
Report on First Conference on Future Directions in Stratigraphy in Urbino, Italy (14-16 June 2002)