Estimation of Inkjet Printer Spur Gear Teeth Number from Pitch Data String of Limited Length. - Yoshinori Akao; Atsushi Yamamoto; Yoshiyasu Higashikawa (IWCF, 2009)

Improvement of Inkjet Printer Spur Gear Teeth Number Estimation by Fixing the Order in Maximum Entropy Spectral Analysis. - Yoshinori Akao; Atsushi Yamamoto; Yoshiyasu Higashikawa (ICWF, 2010)

Feasibility Study of Visualizing Diversity of Japanese Hiragana Handwritings by Multidimensional Scaling of Earth Mover's Distance toward Assisting Forensic Experts in Writer Verification. - Yoshinori Akao; Atsushi Yamamoto; Yoshiyasu Higashikawa (Document Analysis Systems, 2014)

Assisting Forensic Writer Verification by Visualizing Diversity of Digit Handwritings: An Approach by Multidimensional Scaling of Earth Mover's Distance. - Yoshinori Akao; Atsushi Yamamoto; Yoshiyasu Higashikawa (ICFHR, 2014)

A Case Study of the Relationship between Local Pen Action and Three Dimensional Shapes of Handwritten Strokes. - Yoshinori Akao; Yoshiyasu Higashikawa (IWCDF@ICDAR, 2017)