Ryuji Sakai: Publications

(December 2016)

Ryuji Sakai, Kayo Takigawa (Co-author)

(December 2015)

Ryuji Sakai, Kayo Takigawa (Co-author)

Shojihomu Co., Ltd. (October 2015)

Ryuji Sakai (Author and Editor), Tomohiko Iwasaki, Kayo Takigawa, Kaoru Hattori, Kei Okubo, Takashi Saida, Hiroshi Tago (Co-authors), Nozomu Takashima, Yuki Matsumiya (Writing Collaborators)

(September 2015)

Ryuji Sakai, Kensuke Suzuki (co-author)

(May 2015)

Ryuji Sakai, Kayo Takigawa, Yushi Hegawa (Co-author)

(November 2014)

Ryuji Sakai, Kayo Takigawa (Co-author)

(June 2014)

Ryuji Sakai, Kayo Takigawa, Yushi Hegawa (Co-author)

(May 2013)

Ryuji Sakai, Kayo Takigawa, Yushi Hegawa (Co-author)

(October 2012)

Ryuji Sakai (Co-author)

(June 2012)

Ryuji Sakai, Kayo Takigawa, Yushi Hegawa (Co-author)

(March 2012)

Ryuji Sakai

(February 2012)

Ryuji Sakai (Co-author)