On the Colour of Shoyu (Soy sauce)(Expressed by the C.I.E. Trichromatic Specification)
醤油の色に就て (C. I. E. 表色法)

Shojiro Omata, Teruo Ueno
1953 JOURNAL OF THE SOCIETY OF BREWING JAPAN  
Studies on the remaining Enzymes in fresh Sake (3) The interrelation of the quality and concentration of fresh sake with the remaining enzymes.
doi:10.6013/jbrewsocjapan1915.48.474 fatcat:mdj6mau3yfgmpij74geuertjxm