The thesis focuses on mutual blending of the factual and the fictional writing in the work of a Belarusian author Ales Adamovich. Regarding the choice of the analyzed works, two of them (Out of the Fire, 1975; Leningrad Under Siege, 1981) are identified as documentaries in the paratexts. These two works consist of recorded oral testimonies. The other two analyzed works (Khatyn, 1972, The Chasteners, 1981) are fictions, incorporating, however, several authentic documents. Using these works as examples, the thesis illustrates how the (hypothetical) borders between the fact and fiction are blurred and trespassed. The first, literary-historical part will briefly summarize the main concepts of the relationship between art and reality in the Soviet area, beginning with the Formalists and their interest in genre innovations, and concluding with an accent on the individual reader reception of Lidiya Ginzburg and Pyotr Palievsky. The plural aspect is implicitly reflected also in the second part of the thesis, focusing on Adamovich's thinking about the notion of truthfulness in literature. At this point, there is also a related theme of the impact of the genre tradition on the reception of the text. Also in the author's view, the role of the reader seems to be crucial. In the description of the receptive...