Naive probability: A mental model theory of extensional reasoning
Psychological Review (1999) - Comment
doi: 10.1037/0033-295x.106.1.62  issn: 1939-1471  issn: 0033-295x  pubmed: 10197363 

P. N. Johnson-Laird, Paolo Legrenzi, Vittorio Girotto, Maria Sonino Legrenzi, Jean-Paul Caverni