Helle Metslang, Temporal Relations in the Predicate and the Grammatical System of Estonian and Finnish. Dissertation at the University of Oulu, Department of Finnish and Lappish, Oulu, Finland, December 9, 1994, Oulu 1994 (Oulun yliopiston suomen ja saamen kielen laitoksen tutkimusraportteja 39). 279 pp.; pp. 144–148