First International Conference on Spoken Language Processing (ICSLP 90)
This paper attempts to investigate whether velarization is a scalar articulatory feature and if an increase in degree of velarization conveys an increment in the degree of constraint upon tongue dorsum activity. Electropalatographic and acoustical data for  in different languages and contextual conditions allow isolating three degrees of velarization in the consonant. Precise articulatory and acoustic correlates are given for each velarization group. Moreover V-to-C coarticulatory effects in dorsopalatal contact were found to decrease with degree of velarization for  thus suggesting that changes in degree of velarization convey modifications in degree of articulatory constraint.
Bibliographic reference. Recasens, Daniel / Farnetani, Edda (1990): "Articulatory and acoustic properties of different allophones of /l/ in american English, catalan and Italian", In ICSLP-1990, 961-964.