Valiukienė, Vita. “Semantic and Functional Poliphony of the French Verb Devoir ‘must’. A Cross-Linguistic Study La Polyphonie sémantico–fonctionnelle Du Verbe français Devoir. Etude interlangagière”.
Kalbotyra, vol. 65, May 2015, pp. 113-32,
https://doi.org/10.15388/Klbt.2013.7672.