1. 1) Inaba, M., Hasegawa, S., Handa, M., Enomae, T., Takashima, A., Han, Z. and Someya, S.:Usu-mino-gami no Sitsujun-tsuyosa heno Shoshi-houhou no Eikyo (Effect of Sheet Forming Method on Wet Tensile Strength of Usumino-gami(Japanese Kozo Pape))), JAPAN TAPPI JOURNAL, 73(6) , 559-574 (2019)
2. 2) Morimoto, M.:5 sho : Himokuzai wo Kami ni riyousuru Gijutsujyo no Ryuiten(Chapter 5:Consideration of non-wood technology uses on paper), Kankyo no 21seiki ni Ikiru Himokuzai Shigen(Bring out Non-wood Fibres in the 21st century of the Environment, Unishuppan Co. (1999)163-212
3. 3) Imai, H. and Isikawa, H.:Mitsumata no Kenkyu(9)Mitsumata no Jusaibo ni tsuite(Study on Gampi No.9 Parenchyma Cell of Gampi), Naikaku Insatsukyoku Kenkyuhoukoku( Research Bulletin of National Printing Bureau),(3), 9-19(1938)
4. 4) Okawa, A.:Kozo Mitsumata Gampi Sen’i no Kanbetsu(Identification of kozo, mitsumata and gampi fiber), Kami Sozai Bunkazai(Monjyo, Tenseki, Seikyo, Ezu)no Nendai Suitei ni kansuru Kisoteki Kenkyu(The Fundamental Study for the Estimated Era of Paper Cultural Properties (Documents, Classical Books, the Sacred teachings, Drawings), edited by Tomita, M., 2003-2005 Grant-in-Aid for Scientific Research(A)Research Report, University of Toyama, (2008)45-52
5. 5) Uyeda, T., Saito, K., Inaba, M. and Okawa, A.:The Effect of Cooking Agents on Japanese Paper, Restaurator, 20(3-4), 19-125 (1999)