Shibutani, A. 2014. Starch residue analysis of stone tools excavated from the 6th survey of the Nakabyo site. Shimousa Kokogaku 23: 160-161.
Analysing materials excavated in very recent years can avoid any contaminated problems at the lowest possible level. This becomes one of my good experiences because I have conducted starch residue analyses of "all of materials on any conditions".