Quantification of pharyngeal articulations using measurements from laryngoscopic images. - John H. Esling; Jocelyn Clayards; Jerold A. Edmondson; Qiu Fuyuan; Jimmy G. Harris (ICSLP, 1998)

Glottal stop, glottalized resonants, and pharyngeals: A reinterpretation with evidence from a laryngoscopic study of Nuuchahnulth (Nootka). - John H. Esling; Katherine E. Fraser; Jimmy G. Harris (J. Phonetics, 2005)