Иванова, Елена Ю. “Bulgarian Constructions With the Apprehensive Particle Da Ne Bi in the Bulgarian National Corpus”. Slavic Languages Today: Categories, Structures and Processes, edited by Jakub Lubomir Banasiak et al., Lodz University Press, 2021, pp. 139-57, https://doi.org/10.18778/8220-635-7.10.