- Learning and interstanding - a visionVõhandu, LeoE-Learning in Science and Environmental Education : proceedings of the international conference : October 1-4, 2003, Tartu, Estonia2003 / p. 30-32
- Peirce’s abductionBellucci, Francesco; Pietarinen, Ahti-VeikkoHandbook of Abductive Cognition2023 / p. 7-20 https://doi.org/10.1007/978-3-031-10135-9_7