1. Japan Electric Power Civil Engineering Association "One hundred years' history of hydropower plants" (in Japanese), 1992.
2. Hirosige Kitada and Tsutomu Fukui, “New high-strength steel that makes a breakthrough in the marine field” (in Japanese), Seizando, 2014.
3. High-tough welding consumables for 950 N/mm2 class high-strength steels;Hara;Kobe steel engineering reports,2001
4. Welding consumables for 780 and 950 MPa class high strength steels;Sato;Journal of the Japan Welding Society,2009
5. ISO12135:2016, “Metallic materials – Unified method of test for the determination of quasistatic fracture toughness”.