By Wang, Xiangyu
By Open University Course Team
By Lamb, J. D.
By Clara Loeh
By Simon Rubinstein-Salzedo
By Ravindra B. Bapat
By Alexandru Dimca
By Jurgen Jost
By Norman L. Biggs
By Alan Camina, Barry Lewis
By Douglas Jacobson
By Wolfram Koepf
By Biggs, Norman
By Siemons, J.
By Keedwell, A. D.
By Wensley, C. D.
By Borg, Ingwer, Groenen, Patrick J.F., Mair, Patrick
By Iohara, Kenji, Koga, Yoshiyuki
By Squartini, Tiziano, Garlaschelli, Diego
By Guttmann, A. J.
By Schuster, Peter M., Seisenberger, Monika, Weiermann, Andreas
By Larry A. Finkelstein, W.M. Kantor
By Billera, Louis J., Björner, Anders, Greene, Curtis, Simion, Rodica E., Stanley, Richard P.
By Howie, John M.
By Lothaire, M.
By Betten, Anton, Kohnert, Axel, Laue, Reinhard, Wassermann, Alfred