[MathCongrès]
Graph theory, combinatorics, and applications. Vol. 2
/ Ed. Alavi, Yousef ; Ed. Chartrand, G. ; Ed. Oellermann, O. R. ; Ed. Schwenk, A. J. ; Western Michigan University.
-Brisbane, Chichester, New York NY, Singapore, Toronto : John Wiley, 1991. - pag. mult. ; 26 cm
[MathCongrès]
Graph theory, combinatorics, and applications. Vol. 1
/ Ed. Alavi, Yousef ; Ed. Chartrand, G. ; Ed. Oellermann, O. R. ; Ed. Schwenk, A. J. ; Western Michigan University.
-Brisbane, Chichester, New York NY, Singapore, Toronto : John Wiley, 1991. - xiv, 584 p. ; 26 cm