Harmonious Colourings - Notes and bibliography by Keith Edwards. - http://www.maths.dundee.ac.uk/~kedwards/harmcol.html
MERLIN - An approach to solve the asymmetric travelling salesman problem using linear optimisation with a polynomial bounded set of constraints. - http://www.merlins-world.de
Liquid Schedule Construction Algorithm - An efficient method for coloring a congestion graph by Emin Gabrielyan. - http://4z.com/people/emin-gabrielyan/public/060811-liquid-schedule/
Traveling Salesman Problem - These pages report the history of the TSP and ongoing work to solve large instances. - http://www.tsp.gatech.edu//
Parameters of Directed Strongly Regular Graphs - Parameters, constructions and nonexistence information for directed strongly regular graphs. - http://homepages.cwi.nl/~aeb/math/dsrg/dsrg.html
A Constructive Approach to Graph Theory - Notes on a semiotic approach to constructing isomorphism invariants of graphs by John-Tagore Tevet. - http://www.hot.ee/tewet/
TSP Generator - Generates a Traveling Salesman Problem map and data for a given set of US cities. - http://www.sju.edu/~sforman/research/usa_tsp.html
Knight's Tour Problem - Solution for chess boards with upto 32 squares. - http://www.tri.org.au/knightframe.html
The Hamiltonian Page - Hamiltonian cycle and path problems, their generalisations and variations. - http://www.densis.fee.unicamp.br/~moscato/Hamilton.html
Graphnet Archives - Archives of the Graphnet mailing list from February 1990. - http://listserv.nodak.edu/archives/graphnet.html
Multicommodity Problems - Instances and random generators of multicommodity flow and network design problems. - http://www.di.unipi.it/di/groups/optimize/Data/MMCF.html
Signed, Gain and Biased Graphs - List of publications and manuscripts annotated by Thomas Zaslavsky. - http://www.math.binghamton.edu/zaslav/Bsg/
Sandpiles in Graphs - An application of cellular automata by Angela R. Kerns. - http://www.cs.wvu.edu/~angela/cs418a/cs418a.html
The Four Color Theorem - Computer aided proof of the four color theorem by Neil Robertson, Daniel P. Sanders, Paul Seymour and Robin Thomas. - http://www.math.gatech.edu/~thomas/FC/fourcolor.html
Regular Graphs Page - Tables of simple connected k-regular graphs on n vertices and girth at least g. - http://www.mathe2.uni-bayreuth.de/markus/reggraphs.html