Article Azuma, Toru (2014)
Udagawa Yoan's Acceptance if Western Chemistry as seen through the Kyo-U Library Collection in Osaka, Part 2: An Analysis of his teo Manuscripts about the Substance Called “Earths”. 化学史研究 [Kagakushi kenkyū; Journal of the Japanese Society for the History of Chemistry] (pp. 1-19). (/isis/citation/CBB001550615/) unapi

Article Azuma, Toru (2013)
Udagawa Yoan's Acceptance of Western Chemistry as seen through the Kyo-U Library Collection in Osaka, Part 1: An Analysis of his manuscripts translated from Adolphus Ypey's Chemical Books in Dutch. 化学史研究 [Kagakushi kenkyū; Journal of the Japanese Society for the History of Chemistry] (pp. 189-209). (/isis/citation/CBB001550614/) unapi

Article Azuma, Toru (1993)
The science experiments by Shozan Sakuma and the science books in Dutch “Galvanische-Schok-Machine” and Eletrische Stroomen, (In Japanese). 科学史研究 Kagakusi Kenkyu (History of Science) (pp. 143-151). (/isis/citation/CBB000039601/) unapi