@article{DaNiSc94,
	author = {Peter Dankelmann and Thomas Niessen and Ingo Schiermeyer},
	title = "On path-tough graphs",
	pages = "571-584",
	journal = "SIAM J. Discrete Math.",
	volume = "7",
	year = 1994,
	hsb = {RWTH-CONV-223138},
	}