, 2015a, '(Religioosne) usk ja ateism semiootilisest vaatepunktist', Sign systems studies 43 (1), 75-76.
, 2015b, '(Religious) belief and atheism from a semiotic viewpoint', Sign systems studies 43 (1), 48-76.
, 2002a, 'On universalism in connection with the interpretation of magic in the semiotics of Juri Lotman', Sign systems studies 30 (2), 555-576.