Σωτηρίου Α., and Ζαφειροπούλου Μ. “Changes of children’s Self-Concept During Transition from Kindergarten to Primary School”. Psychology: The Journal of the Hellenic Psychological Society, vol. 10, no. 1, Oct. 2020, pp. 96-118, doi:10.12681/psy_hps.23961.