1. 1) Yoshida, T.: “Kinzoku Hadammen no Mikata”, Nikkan Kogyo Shimbunsya, Tokyo (1970)
2. 2) Kodama, H.: Kobunshi, 65, 622 (2016)
3. 3) Otake, Y.: “Gomu Plastic Zairyo no Trouble to Taisaku: Rekka to Zairyo Sentaku”, Nikkan Kogyo Shimbunsya, Tokyo, p.16 (2005)
4. 4) Otake, Y.: “Kobunshi Zairyo no Fractography: Hakai Mechanism to Hamen Kaiseki Jirei, Science & Technology, Tokyo, p.83-102 (2011)
5. 5) Tamai, Y.; Tomita, A.: Kotai Kagaku 1, Asakura Syoten, Tokyo, p.63 (1970)