Security number of grid-like graphs. - Kyohei Kozawa; Yota Otachi; Koichi Yamazaki (Discret. Appl. Math., 2009)

On spanning tree congestion of graphs. - Kyohei Kozawa; Yota Otachi; Koichi Yamazaki (Discret. Math., 2009)

The carving-width of generalized hypercubes. - Kyohei Kozawa; Yota Otachi; Koichi Yamazaki (Discret. Math., 2010)

On spanning tree congestion of Hamming graphs - Kyohei Kozawa; Yota Otachi (CoRR, 2011)

Spanning tree congestion of k-outerplanar graphs. - Hans L. Bodlaender; Kyohei Kozawa; Takayoshi Matsushima; Yota Otachi (Discret. Math., 2011)

Spanning tree congestion of rook's graphs. - Kyohei Kozawa; Yota Otachi (Discuss. Math. Graph Theory, 2011)

Lower bounds for treewidth of product graphs. - Kyohei Kozawa; Yota Otachi; Koichi Yamazaki (Discret. Appl. Math., 2014)