The competition numbers of complete tripartite graphs SR Kim, Y Sano Discrete Applied Mathematics 156 (18), 3522-3524, 2008 | 35 | 2008 |

Edge-signed graphs with smallest eigenvalue greater than− 2 G Greaves, J Koolen, A Munemasa, Y Sano, T Taniguchi Journal of Combinatorial Theory, Series B 110, 90-111, 2015 | 28 | 2015 |

Matroids on convex geometries (cg-matroids) S Fujishige, GA Koshevoy, Y Sano Discrete Mathematics 307 (15), 1936-1950, 2007 | 23 | 2007 |

The competition numbers of complete multipartite graphs and mutually orthogonal Latin squares B Park, SR Kim, Y Sano Discrete Mathematics 309 (23-24), 6464-6469, 2009 | 21 | 2009 |

The competition-common enemy graphs of digraphs satisfying Conditions and Y Sano arXiv preprint arXiv:1006.2631, 2010 | 19 | 2010 |

The competition graphs of oriented complete bipartite graphs SR Kim, JY Lee, B Park, Y Sano Discrete Applied Mathematics 201, 182-190, 2016 | 18 | 2016 |

The competition hypergraphs of doubly partial orders SR Kim, JY Lee, B Park, Y Sano Discrete Applied Mathematics 165, 185-191, 2014 | 16 | 2014 |

The competition number of a graph whose holes do not overlap much SR Kim, JY Lee, Y Sano Discrete Applied Mathematics 158 (13), 1456-1460, 2010 | 15 | 2010 |

The competition number of the complement of a cycle SR Kim, B Park, Y Sano Discrete Applied Mathematics 161 (12), 1755-1760, 2013 | 14 | 2013 |

The phylogeny graphs of doubly partial orders B Park, Y Sano Discussiones mathematicae graph theory 33 (4), 657-664, 2013 | 14 | 2013 |

The competition numbers of ternary Hamming graphs B Park, Y Sano Applied Mathematics Letters 24 (9), 1608-1613, 2011 | 14 | 2011 |

The competition numbers of Hamming graphs with diameter at most three B Park, Y Sano arXiv preprint arXiv:1011.2591, 2010 | 14 | 2010 |

Characterizations of competition multigraphs Y Sano Discrete Applied Mathematics 157 (13), 2978-2982, 2009 | 14 | 2009 |

The niche graphs of doubly partial orders SR Kim, JY Lee, B Park, WJ Park, Y Sano arXiv preprint arXiv:0905.3954, 2009 | 14 | 2009 |

Rank functions of strict cg-matroids Y Sano Discrete Mathematics 308 (20), 4734-4744, 2008 | 13 | 2008 |

A generalization of Opsut’s lower bounds for the competition number of a graph Y Sano Graphs and Combinatorics 29, 1543-1547, 2013 | 12 | 2013 |

On the hypercompetition numbers of hypergraphs B Park, Y Sano arXiv preprint arXiv:1005.5622, 2010 | 12 | 2010 |

On the phylogeny graphs of degree-bounded digraphs SC Lee, J Choi, SR Kim, Y Sano Discrete Applied Mathematics 233, 83-93, 2017 | 11 | 2017 |

On the competition graphs of d-partial orders J Choi, KS Kim, SR Kim, JY Lee, Y Sano Discrete Applied Mathematics 204, 29-37, 2016 | 11 | 2016 |

The competition numbers of complete multipartite graphs with many partite sets SR Kim, B Park, Y Sano Discrete Applied Mathematics 160 (7-8), 1176-1182, 2012 | 11 | 2012 |