1. The Holocene evolution of permafrost near the tree line on the eastern coast of Hudson Bay (Northern Quebec);Allard;Canadian Journal of Earth Sciences,1987
2. Insolation signature of Quaternary climate changes;Berger;II Nuovo Cimento,1979
3. Insolation change, ice volumes and the 18O record in deep sea cores;Broecker;Rev. Geophys.,1979
4. Interstadiale Bodenbildung als stratigraphische Zeitmarken im Ablauf der Weichsel Kalkzeit;Ducker;Fundamenta,1967