1. Deterioration of coated film of Japanese lacquer;Toishi;Sikizai,1967
2. Deterioration analysis of lacquer film surface by exposure to outdoor;Ogawa;Kobunkazai no kagaku,1993
3. Improvement of drying for black urushi lacquer and of light-resistance for its film;Egasira;Mater. Life,1995
4. Stabilization in appearance of oriental lacquer film by bromination;Ogawa;Polymer Preprints, Japan,2002
5. Research on improving the urushi project;Sasamori;Ishikawaken kogyoushikenjyou kenkyuhoukoku,1991