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 Szabolcs Horvat igraph C core library 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) Daniel Noom igraph C core library 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 igraph C core library 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 Fabio Zanini igraph C core library
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
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