Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Satake Tsuneo and Iizuka Naomi and Itoh Junko and Tohkawa Takeshi,A Subtype of Severe Expressive Language Delay: Analysis of Speechless Children Using Acquisition Model of Expressive Language.,The Japan Journal of Logopedics and Phoniatrics,0030-2813,The Japan Society of Logopedics and Phoniatrics,1993,34,4,354-373,https://cir.nii.ac.jp/crid/1390282679874548736,https://doi.org/10.5112/jjlp.34.354