Editing Conceptual graph (section)

===Bibliography===
* {{cite book |last1=Chein |first1=Michel |last2=Mugnier |first2=Marie-Laure |year=2009 |title=Graph-based Knowledge Representation: Computational Foundations of Conceptual Graphs |publisher=Springer |url=http://www.lirmm.fr/gbkrbook/ |isbn=978-1-84800-285-2 | doi=10.1007/978-1-84800-286-9}}
* {{cite book |last=Dau |first=F. |year=2003 |title=The Logic System of Concept Graphs with Negation and Its Relationship to Predicate Logic |series=[[Lecture Notes in Computer Science]] |volume=2892 |publisher=Springer }}
* {{cite journal |last=Sowa |authorlink = John Sowa |first=John F. |date=July 1976 |title=Conceptual Graphs for a Data Base Interface |journal=IBM Journal of Research and Development |volume=20 |issue=4 |pages=336–357 |url=http://www.research.ibm.com/journal/rd/204/ibmrd2004E.pdf |doi=10.1147/rd.204.0336}}
* {{cite book |last=Sowa |first=John F. |year=1984 |title=Conceptual Structures: Information Processing in Mind and Machine |url=https://archive.org/details/conceptualstruct0000sowa |url-access=registration |location=Reading, MA |publisher=Addison-Wesley |isbn=978-0-201-14472-7 }}
* {{cite journal|title=Conceptual graphs for the analysis and generation of sentences
|first1=Paola |last1=Velardi |first2=Maria Teresa |last2=Pazienza |first3=Mario |last3=De' Giovanetti |journal=IBM Journal of Research and Development |volume=32 |number=2 |date=March 1988 |pages=251–267 |publisher=IBM Corp. Riverton, NJ, USA |doi=10.1147/rd.322.0251}}