igraph authors, in alphabetical order:
--------------------------------------

Patrick R. Amestoy	AMD library
Adelchi Azzalini	igraph.options based on the sm package
Tamas Badics		GLPK
Gregory Benison		Minimum cut calculation
Adrian Bowman		igraph.options based on the sm package
Walter Böhm		LSAP
Keith Briggs		Parts from the Very Nauty Graph Library
      			Geometric random graphs
			Girth
      			Various patches and bug fixes
Jeroen Bruggeman	spinglass community detection
       			Burt's constraints
Juergen Buchmueller	Big number math implementation
Carter T. Butts		Some layout algorithms from the SNA R package
       	  		bonpow function in the SNA R package
			Some R manual pages, from the SNA R package
Aaron Clauset		Hierarchical random graphs
J.T. Conklin		logbl function
Topher Cooper		GSL random number generators (not used in R)
Gabor Csardi		Most of igraph
Trevor Croft		simpleraytracer
Peter DalGaard		zeroin root finder
Timothy A Davis		CXSPARSE: a Concise Sparse Matrix package - Extended
	  		AMD library
	  		Sparse matrix column ordering
Laurent Deniau		Bits of the error handling system
Ulrich Drepper		logbl function
Iain S. Duff		AMD library
     			GLPK
S.I. Feldman		f2c
David Firth		Display data frame in Tk, from relimp package
P. Foggia		VF2 graph isomorphism algorithm
John Fox		R: suppressing X11 warnings
Alan George   		GLPK
John Gilbert		Sparse matrix column ordering
D.Goldfarb		GLPK
Brian Gough		GSL random number generators (not used in R)
Tom Gregorovic		Multilevel community detection
M.Grigoriadis		GLPK
Oscar Gustafsson	GLPK
Kurt Hornik		LSAP
Paul Hsieh		pstdint.h
Ross Ihaka		Some random number generators (not used in R)
Tommi Junttila		BLISS graph isomorphism library
Petteri Kaski		BLISS graph isomorphism library
Oleg Keselyov		zeroin root finder
Darwin Klingman		GLPK
Donald E. Knuth		GLPK
Stefan I. Larimore	Sparse matrix column ordering
Yusin Lee 		GLPK
Richard Lehoucq		ARPACK
Rene Locher		R arrow drawing function, from IDPmisc package
J.C. Nash		BFGS optimizer
Joseph W-H Liu		GLPK
Makoto Matsumoto	GSL random number generators (not used in R)
Vincent Matossian	Graph laplacian
			igraph_neighborhood_graphs
			Line graphs
Peter McMahan		Cohesive blocking
Andrew Makhorin		GLPK
David Morton de Lachapelle	Spectral coarse graining
Laurence Muller		Fixes for compilation on MS Visual Studio
Fionn Murtagh		Order a hierarchical clustering
Emmanuel Navarro	infomap community detection
	 		Various fixes and patches
Tamas Nepusz		Most of igraph
Esmond Ng 		Sparse matrix column ordering
Kevin O'Neill		Maximal independent vertex sets
Takuji Nishimura	GSL random number generators (not used in R)
Jim Orlin		GLPK
Patric Ostergard	GLPK
Elliot Paquette		psumtree data type
Pascal Pons		walktrap community detection
Joerg Reichardt		spinglass community detection
Marc Rieffel		GSL random number generators (not used in R)
B.D. Ripley		igraph.options based on the sm package
     			BFGS optimizer
			Various bug fixes
Martin Rosvall		infomap community detection
Andreas Ruckstuhl	R arrow drawing function, from IDPmisc package
Heinrich Schuchardt	GLPK
J.K. Reid 		GLPK
C. Sansone		VF2 graph isomorphism algorithm
Michael Schmuhl		The graphopt layout generator
Christine Solnon	LAD graph isomorphism library
Danny Sorensen		ARPACK
James Theiler		GSL random number generators (not used in R)
Samuel Thiriot		Interconnected islands graph generator
Vincent A. Traag	spinglass community detection
Magnus Torfason		R operators that work by name
Theodore Y. Ts'o        libuuid
Minh Van Nguyen		Microscopic update rules
     	 		Various test cases
     	 		Many documentation and other fixes
M. Vento		VF2 graph isomorphism algorithm
Fabien Viger		gengraph graph generator
Phuong Vu		ARPACK
P.J. Weinberger		f2c
Hadley Wickham          lazyeval
Garrett A. Wollman	qsort
B.N. Wylie 		DrL layout generator
Chao Yang		ARPACK

Institutional copyright owners:
-------------------------------

Free Software Foundation, Inc	Code generated by bison
Sandia Corporation	  	DrL layout generator
The R Development Core Team 	Some random number generators (not used in R)
      		       		R: as.dendrogram from stats package
The Regents of the University of California	qsort
Xerox PARC		      	Sparse matrix column ordering
R Studio                        lazyeval

Other contributors
------------------

Neal Becker		Patches to compile with gcc 4.4
Richard Bowman		R patches
Alex Chen		Patch to compile on Intel compilers
Daniel Cordeiro 	Patches
Tom Gregorovic		Bug fixes
Mayank Lahiri		Forest fire game fix
John Lapeyre 		Patches
Christopher Lu		Various fixes and patches
André Panisson		R patches
Bob Pap 		Bug fixes
Keith Ponting		R package bug fixes
Martin J Reed		Bug fixes
Elena Tea Russo		Bug fixes
KennyTM			Bug fixes
Jordi Torrents		Patches
Matthew Walker		Various patches
Kai Willadsen		Arrow size support in Python