@InProceedings{Wattenhofer2016lower,
	author=	{Klaus-Tycho Förster and Roger Wattenhofer},
	title=	{{Lower and Upper Competitive Bounds for Online Directed Graph Exploration}},
	booktitle=	{{Theoretical Computer Science, Volume 655, Part A, pp. 15-29}},
	month=	{December},
	year=	{2016},
}