The number of labeled 2-connected planar graphs EA Bender, Z Gao, NC Wormald the electronic journal of combinatorics 9 (1), R43, 2002 | 96 | 2002 |

The distribution of heights of binary trees and other simple trees P Flajolet, Z Gao, A Odlyzko, B Richmond Combinatorics, Probability and Computing 2 (2), 145-156, 1993 | 69 | 1993 |

2-walks in circuit graphs ZC Gao, RB Richter Journal of Combinatorial Theory, Series B 62 (2), 259-267, 1994 | 67 | 1994 |

Central and local limit theorems applied to asymptotic enumeration IV: multivariate generating functions Z Gao, LB Richmond Journal of Computational and Applied Mathematics 41 (1-2), 177-186, 1992 | 64 | 1992 |

The distribution of the maximum vertex degree in random planar maps Z Gao, NC Wormald Journal of Combinatorial Theory, Series A 89 (2), 201-230, 2000 | 61 | 2000 |

The number of rooted triangular maps on a surface ZC Gao Journal of Combinatorial Theory, Series B 52 (2), 236-249, 1991 | 59 | 1991 |

The Map Asymptotics Constant EA Bender, Z Gao, LB Richmond the electronic journal of combinatorics 15 (1), R51, 2008 | 55 | 2008 |

The number of rooted 2-connected triangular maps on the projective plane ZC Gao Journal of Combinatorial Theory, Series B 53 (1), 130-142, 1991 | 55 | 1991 |

A pattern for the asymptotic number of rooted maps on surfaces Z Gao Journal of Combinatorial Theory, Series A 64 (2), 246-264, 1993 | 51 | 1993 |

The number of degree restricted maps on general surfaces Z Gao Discrete mathematics 123 (1-3), 47-63, 1993 | 46 | 1993 |

The size of the largest components in random planar maps Z Gao, NC Wormald SIAM Journal on Discrete Mathematics 12 (2), 217-228, 1999 | 43 | 1999 |

Submaps of maps. I. General 0–1 laws EA Bender, ZC Gao, LB Richmond Journal of Combinatorial Theory, Series B 55 (1), 104-117, 1992 | 41 | 1992 |

Diagonal flips in labelled planar triangulations Z Gao, J Urrutia, J Wang Graphs and Combinatorics 17, 647-657, 2001 | 36 | 2001 |

The asymptotic number of rooted 2-connected triangular maps on a surface ZC Gao Journal of Combinatorial Theory, Series B 54 (1), 102-112, 1992 | 36 | 1992 |

Simultaneous diagonal flips in plane triangulations P Bose, J Czyzowicz, Z Gao, P Morin, DR Wood Journal of Graph Theory 54 (4), 307-330, 2007 | 35 | 2007 |

Asymptotic normality determined by high moments, and submap counts of random maps Z Gao, NC Wormald Probability theory and related fields 130 (3), 368-376, 2004 | 35 | 2004 |

Asymptotic enumeration of correlation-immune Boolean functions ER Canfield, Z Gao, C Greenhill, BD McKay, RW Robinson Cryptography and Communications 2, 111-126, 2010 | 34 | 2010 |

2‐Connected coverings of bounded degree in 3‐connected graphs Z Gao Journal of Graph Theory 20 (3), 327-338, 1995 | 32 | 1995 |

Asymptotic enumeration of labelled graphs with a given genus EA Bender, Z Gao arXiv preprint arXiv:0912.4670, 2009 | 30 | 2009 |

Irreducible triangulations and triangular embeddings on a surface ZC Gao, LB Richmond, C Thomassen Faculty of Mathematics, University of Waterloo, 1991 | 30 | 1991 |