@incollection{godsil:1995:csp,
    author = {Godsil, C. D. and Gr{\"o}tschel, M. and Welsh, D. J. A.},
     title = {Combinatorics in Statistical Physics},
    editor = {Graham, Ronald L. and Gr{\"o}tschel, M. and Lov{\'a}sz, L.},
 booktitle = {Handbook of Combinatorics, Vol.\ 2},
     pages = {1925–1954},
 publisher = {Elsevier},
   address = {Amsterdam},
      year = {1995},
   mrclass = {82-02 (05C90 82B20 82D30)},
  mrnumber = {MR1373693},
     zblno = {0882.05014}}