Kalnača, A. and Lokmane, I. 2022. The verb vajadzēt ‘to need, must’ in Latvian: its Livonian origins, modal and distributional features. Eesti ja soome-ugri keeleteaduse ajakiri. Journal of Estonian and Finno-Ugric Linguistics. 13, 1 (Sep. 2022), 91–120. DOI:https://doi.org/10.12697/jeful.2022.13.1.04.