year={1984},
publisher={Cambridge University Press}
}
+
+@article{ mm:grading,
+ author={{Mare\v{s}, M.}},
+ title={{Perspectives on Grading Systems}},
+ journal={Olympiads in Informatics},
+ volume={1},
+ pages={124--130},
+ year={2007},
+ publisher={Institute of Mathematics and Informatics},
+ address={Vilnius, Lithuania}
+}
+
+@inproceedings{ hochstein:maxflow,
+ author = {Jan M. Hochstein and Karsten Weihe},
+ title = {{Maximum $s$-$t$-flow with $k$ crossings in $\O(k^3n \log n)$ time}},
+ booktitle = {SODA 2007: Proceedings of the 18th annual ACM-SIAM symposium on Discrete algorithms},
+ year = {2007},
+ isbn = {978-0-898716-24-5},
+ pages = {843--847},
+ location = {New Orleans, Louisiana},
+}
+
+@techreport { tazari:mcgc,
+ author = {Matthias M\"uller-Hannemann and Siamak Tazari},
+ title = {{Handling Proper Minor-Closed Graph Classes in Linear Time: Shortest Paths and 2-Approximate Steiner Trees}},
+ institution = "University of Halle-Wittenberg, Institute of Computer Science",
+ year = "2007",
+ number = "2007/5",
+ type = "Tech Report"
+}