This 21th International Conference on Descriptional Complexity of Formal Systems is organized by the Košice branch of the Mathematical Institute of the Slovak Academy of Sciences.
The first workshop DCAGRS was held in Magdeburg, Germany, in 1999. The first workshop FDSR was held in Paderborn, Germany, in 1998. Since 2002, the two workshops have merged to DCFS. Since 2016, DCFS is a conference.
The general home website of the conference: http://www.informatik.uni-giessen.de/dcfs/DCFS is supported by the International Federation for Information Processing (IFIP), working group 1.2: Descriptional Complexity.