@article{brezin:1978:pd,
    author = {Br{\'e}zin, E. and Itzykson, C. and Parisi, G. and Zuber, J.
              B.},
     title = {Planar diagrams},
   journal = {Comm. Math. Phys.},
  fjournal = {Communications in Mathematical Physics},
    volume = {59},
      year = {1978},
    number = {1},
     pages = {35–51},
      issn = {0010-3616},
   mrclass = {81.05},
  mrnumber = {MR0471676 (57 \#11401)},
mrreviewer = {C. S. Sharma},
       doi = {10.1007/BF01614153},
     zblno = {0997.81548}}