Extensions of Euler diagrams in Peirce's four manuscripts on logical graphsPietarinen, Ahti-VeikkoDiagrammatic Representation and Inference : 9th International Conference, Diagrams 2016, Philadelphia, PA, USA, August 7-10, 2016 : proceedings2016 / p. 139-154 : ill http://dx.doi.org/10.1007/978-3-319-42333-3_11

Negative terms in Euler diagrams : Peirce's solutionMoktefi, Amirouche; Pietarinen, Ahti-VeikkoDiagrammatic Representation and Inference : 9th International Conference, Diagrams 2016, Philadelphia, PA, USA, August 7-10, 2016 : proceedings2016 / p. 286-288 : ill http://dx.doi.org/10.1007/978-3-319-42333-3_25