Jacoby, G.; Solomina, O.; Frank, D.; Eremenko, N.; D'Arrigo, R. (2004). »Kunashir (Kuriles) Oak 400-year reconstruction of temperature and relation to the Pacific Decadal Oscillation«. Palaeogeography, Palaeoclimatology, Palaeoecology. 209 (1–4): 303–311. Bibcode:2004PPP...209..303J. doi:10.1016/j.palaeo.2004.02.015.
harvard.edu
ui.adsabs.harvard.edu
Jacoby, G.; Solomina, O.; Frank, D.; Eremenko, N.; D'Arrigo, R. (2004). »Kunashir (Kuriles) Oak 400-year reconstruction of temperature and relation to the Pacific Decadal Oscillation«. Palaeogeography, Palaeoclimatology, Palaeoecology. 209 (1–4): 303–311. Bibcode:2004PPP...209..303J. doi:10.1016/j.palaeo.2004.02.015.