Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Y. Wada and Kazushi Maruyama and Yasushi Tsukano and Eiji Tsuru,Development of OCTG Connection for Automated Drilling Rigs,Proceedings of IADC/SPE Drilling Conference,,Society of Petroleum Engineers (SPE),2000-02-01,,,,https://cir.nii.ac.jp/crid/1870865117916422912,https://doi.org/10.2523/59147-ms