Dart (1991), p. 8, "By apical [dental] is probably meant apicolaminal, since it is very difficult for someone with normal dentition to put the tip of the tongue on the teeth without the blade also touching the base of the teeth in front of the alveolar ridge Dart, Sarah N. (1991). Articulatory and Acoustic Properties of Apical and Laminal Articulations. Working Papers in Phonetics. Vol. 79.
