@mastersthesis{Koutschan05,
 author = {Christoph Koutschan},
 title = {Regular languages and their generating functions: the inverse problem},
 school = {Friedrich-Alexander-Universit\"at},
 address = {Erlangen-N\"urnberg, Germany},
 year = {2005},
 type = {Master thesis ({D}iplomarbeit)},
 url = {http://www.koutschan.de/res/rlanggfun/},
}