1. Sumihisa Aoki, Kunio Fukuhara, Shin-ichi Katayama, Toshio Teraoka, Present Status in Development of Contact Strips to be Adopted for Shinkansen’s Pantographs, RTRI Report 4 (10) (1990) 58–65 (in Japanese).
2. Sumihisa Aoki, Kunio Fukuhara, Hiroki Nagasawa, Effect of Material Combination of Metallic Contact Strip and Contact Wire on Wear Characteristics, RTRI Report 9 (6) (1995) 31–36 (in Japanese).
3. Wear properties of metal/carbon composite pantograph sliders for conventional electric vehicles;Kubo;QR RTRI,1997
4. Development of metal/carbon composite pantograph contact strips for the Shinkansen electric vehicles;Kubo;QR RTRI,1997
5. Sumihisa Aoki, Shunichi Kubo, Present status and problems of contact strips for high speed vehicles’ pantographs, Jpn. J. Tribol. 38 (1993).