Keith, Sarah; Hughes, Diane. Embodied Kawaii: Girls' voices in J-pop: Hughes and Keith. Journal of Popular Music Studies. December 2016, 28 (4): 474–487. doi:10.1111/jpms.12195.
"You are doing urikko!: Censoring/scrutinizing artificers of cute femininity in Japanese," Laura Miller in Japanese Language, Gender, and Ideology: Cultural Models and Real People, edited by Janet Shibamoto Smith and Shigeko Okamoto, Oxford University Press, 2004. In Japanese. plushies