2009 February 26, Stephen Barker et al., “Interhemispheric Atlantic seesaw response during the last deglaciation”, in Nature, volume 457, number 7233, DOI:10.1038/nature07770, pages 1097-1102:
Denton, G. H., Broecker, W. S. & Alley, R. B. The mystery interval 17.5 to 14.5 kyrs ago .