@article{8d786e2896c14e89b217bbe454674bc1,
title = "Two papers on existential graphs by Charles Peirce",
keywords = "Differential Calculus, Collectional Sign, Logical Algebra, Graph Transformation Rule, Logical Machine",
author = "Pietarinen, {Ahti Veikko}",
note = "Publisher copyright: {\textcopyright} 2014, Springer Science Business Media Dordrecht",
year = "2015",
month = apr,
doi = "10.1007/s11229-014-0498-y",
language = "English",
volume = "192",
pages = "881--922",
journal = "Synthese",
issn = "0039-7857",
publisher = "Springer Netherlands",
number = "4",
}