Authors: J. Jouzel, N. I. Barkov, Jean-Marc Barnola, Michael L. Bender, J. Chappellaz, Christophe Genthon, V. M. Kotlyakov, V. Lipenkov, C. Lorius, J. R. Petit, Dominique Raynaud, G. M. Raisbeck, Catherine Ritz, Todd Sowers, M. Stiévenard, F. Yiou, Pascal Yiou - Nature 1993 cited by 575
