%Aigaion2 BibTeX export from %Wednesday 23 July 2025 09:15:47 AM @TECHREPORT{, author = {Fernández-Madrigal, Juan-Antonio}, month = may, title = {The Categories of Graphs with Abstractions and Graphs with Refinements}, year = {2005}, institution = {System Engineering and Automation Dpt. - Univesity of Málaga (Spain)} }