1. Geochemistry of Pleistocene sapropels and associated sediments from the Eastern Mediterranean;Calvert;Oceanol. Acta,1983
2. Evidence from nitrogen isotope ratios for enhanced productivity during formation of eastern Mediterranean sapropels;Calvert;Nature,1992
3. Castradori , D. I Nannofossili calcarei come strumento per lo studio biostratigrafico e paleoceanografico del Quaternario nel Mediterranee Orientale Milan, Italy 1992
4. Calcareous nannofossil biostratigraphy and biochronology in eastern Mediterranean deep-sea cores;Castradori;Riv. It. Paleontol. Strat.,1993