• On the diagrammatic representation of existential statements with Venn diagramsMoktefi, Amirouche; Pietarinen, Ahti-VeikkoJournal of logic, language and information2015 / p. 361-374 : ill https://doi.org/10.1007/s10849-015-9228-1 https://www.scopus.com/sourceid/145095 https://www.scopus.com/record/display.uri?eid=2-s2.0-84948110577&origin=inward&txGid=08ad332844eb22e3ce9d52f6959d63a4