"Military Reform and the Illusion of Social Mobility in Bakumatsu-era Chōshū" (D. Colin Jaundrill) - kb.osu.edu/dspace/bitstream/handle/1811/53619/E...
The Chōshū Shotai ( 長州諸隊 )'s Activities and Relations with the Chōshū government during the Bakumatsu - s-space.snu.ac.kr/pdfupload/0000977288.pdf
Про Каваи Цугиносукэ - kb.osu.edu/dspace/bitstream/handle/1811/36287/E...