An Exploratory Study on Estimating the Ability of High Skilled Crowd Workers. - Kousaku Igawa; Kunihiko Higa; Tsutomu Takamiya (IIAI-AAI, 2016)

Estimating the Ability of Crowd Workers: An Exploratory Experiment Using the Japanese-English Translation Work. - Tsutomu Takamiya; Kunihiko Higa; Kousaku Igawa (CRIWG, 2018)

Utilizing short version big five traits on crowdsouring. - Kousaku Igawa; Kunihiko Higa; Tsutomu Takamiya (Int. J. Crowd Sci., 2020)