- The Orthographic Principles in the Slavic Languages: Phoentic/Phonological2010 | Faculty of Arts
- Is the orthography of the Najden Gerov´s dictionary konservative? (Najden Gerov´s dictionary as a mirror of the time)2002 | Faculty of Mathematics and Physics
- Elements of Foreign Orthographical Systhems in the Orthography of North-Central Romani - Changes of Marking of Code-switching in Theory and Editorial Work in 1991-19962021 | Faculty of Arts
- Elements of other orthographies in the orthography of North-Central Romani: changes in theory and practical editing from the beginning of the systhematical orthography till the turn of 1980s and 1990s2017 | Faculty of Arts