Wimmer, Heinz; Perner, Josef (January 1983). “Beliefs about beliefs: Representation and constraining function of wrong beliefs in young children's understanding of deception”. Cognition13 (1): 103–128. doi:10.1016/0010-0277(83)90004-5. PMID6681741.
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Wimmer, Heinz; Perner, Josef (January 1983). “Beliefs about beliefs: Representation and constraining function of wrong beliefs in young children's understanding of deception”. Cognition13 (1): 103–128. doi:10.1016/0010-0277(83)90004-5. PMID6681741.
Wimmer, Heinz; Perner, Josef (January 1983). “Beliefs about beliefs: Representation and constraining function of wrong beliefs in young children's understanding of deception”. Cognition13 (1): 103–128. doi:10.1016/0010-0277(83)90004-5. PMID6681741.