Quantity-related variation of duration, pitch and vowel quality in spontaneous Estonian. - Pärtel Lippus; Eva Liina Asu; Pire Teras; Tuuli Tuisk (J. Phonetics, 2013)

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)