1. 1) JIS M 8212: 2014, Iron ores - Determination of total iron content (in Japanese).
2. 2) ISO 9507: 1990, Iron ores - Determination of total iron content - Titanium (III) chloride reduction methods.
3. 3) M.Saeki, K.Nishizaka, M.Iwamoto and K.Adachi: Tetsu-to-Hagané, 60(1974), 2045 (in Japanese). https://doi.org/10.2355/tetsutohagane1955.60.13_2045
4. 4) Steel Chemical Analyses Vol. 9, ed. by The 19th Committee on Steelmaking, The Japan Society for Promotion of Science, Nikkan Kogyo Shimbun, Tokyo, (1963), 28 (in Japanese).
5. 5) ISO 9508: 1990, Iron ores – Determination of total iron content – Silver reduction titrimetric method.