A. F. M de Jong, and W. G. Mook. “Natural C-14 Variations and Consequences for Sea-Level Fluctuations and Frequency Analysis of Periods of Peat Growth”. Netherlands Journal of Geosciences (January 1, 1981): 331-336. Accessed April 6, 2026. https://njgjournal.nl/index.php/njg/article/view/13635.