The tonal component of Estonian quantity in native and non-native perception. - Pärtel Lippus; Karl Pajusalu; Jüri Allik (J. Phonetics, 2009)

Temporal patterns of quantity in Inari Saami. - Helen Türk; Pärtel Lippus; Karl Pajusalu; Pire Teras (ICPhS, 2015)

The acoustic correlates of quantity in Inari Saami. - Helen Türk; Pärtel Lippus; Karl Pajusalu; Pire Teras (J. Phonetics, 2019)