Musical Accent in Japanese Morphology 論文 Oreste Pletner ·1924-06-01 ·『Bulletin of the School of Oriental and African Studies』 3(3) pp. 447-466 doi:10.1017/s0041977x00148505
Japanese Onomatopes and the Origin of Language 論文 W. G. Aston ·1894-01-01 ·『The Journal of the Anthropological Institute of Great Britain and Ireland』 23 pp. 332-332 doi:10.2307/2842085