The study and subsequent description of the chief works of the Slavic countries in the mediaeval period. Study of the imprint and influence of these works on the modern literature of Russia, Poland and the Czech Republic, with attention to traductological processes and problems. Besides its scientific value, this research has a teaching focus, allowing the results to be used in the training of Slavic philologists and specialists in the field of humanities in general. The scientific results of the development of this line of research have already materialised in various research projects and teaching innovations, as well as in a publication that was very well-received and valued by both Spanish and foreign philologists.