Urushibara-Yoshino, Kazuko, Franz-Dieter Miotke, Naruhiko Kashima, Tadashi Kuramoto, Hiroyuki Enomoto, Hiroyuki Kina, and Tadashi Nakahoto. 1998. “The Solution Rate of Limestone Tablets and CO2 Measurements in Limestone Areas of Japan”. Geografia Fisica E Dinamica Quaternaria 3 (4): 35-39. https://www.gfdq.glaciologia.it/index.php/GFDQ/article/view/1193.