@inproceedings {Fischer-Heun-Kramer/2006,
	title = {{Optimal String Mining Under Frequency Constraints}},
	booktitle = {Proceedings of the 10th European Conference on Principles and Practice of Knowledge Discovery in Databases (PKDD{\textquoteright}06)},
	series = {Lecture Notes in Computer Science},
	volume = {4213},
	year = {2006},
	pages = {139-150},
	publisher = {Springer-Verlag},
	address = {Berlin, Germany, September 18-22, 2006},
	keywords = {heun-group},
	doi = {10.1007/11871637_17},
	author = {Johannes Fischer and Volker Heun and Stefan Kramer},
	editor = {J. F{\"u}rnkranz and T. Scheffer and M. Spiliopoulou}
}