Some combinatorial problems. - Jin Akiyama; Kiyoshi Hosono; Masatsugu Urabe (Discret. Math., 1993)

Topics on line segments and polygons. - Kiyoshi Hosono; Masatsugu Urabe; Mamoru Watanabe (Discret. Math., 1996)

Geometric matching problem of disjoint compact convex sets by line segments. - Kiyoshi Hosono; Katsumi Matsuda (CCCG, 1997)

On a disjoint quadrilateral partition for a given point se. - Kiyoshi Hosono; Masatsugu Urabe (CCCG, 1998)

On the Existence of a Point Subset with 4 or 5 Interior Points. - David Avis; Kiyoshi Hosono; Masatsugu Urabe (JCDCG, 1998)

On Convex Decompositions of Points. - Kiyoshi Hosono; David Rappaport; Masatsugu Urabe (JCDCG, 2000)

On the number of disjoint convex quadrilaterals for a planar point set. - Kiyoshi Hosono; Masatsugu Urabe (Comput. Geom., 2001)

On an estimate of the size of the maximum matching for a family of disjoint compact convex sets in the plane. - Kiyoshi Hosono (Discret. Appl. Math., 2001)

On the visibility graph of convex translates. - Kiyoshi Hosono; Henk Meijer; David Rappaport (Discret. Appl. Math., 2001)

On the existence of a point subset with a specified number of interior points. - David Avis; Kiyoshi Hosono; Masatsugu Urabe (Discret. Math., 2001)

A Pair in a Crowd of Unit Balls. - Kiyoshi Hosono; Hiroshi Maehara; Katsumi Matsuda (Eur. J. Comb., 2001)

Partitioning a Planar Point Set into Empty Convex Polygons. - Ren Ding; Kiyoshi Hosono; Masatsugu Urabe; Changqing Xu (JCDCG, 2002)

On the perfect matching of disjoint compact sets by noncrossing line segments in Rn. - Kiyoshi Hosono; Katsumi Matsuda (Discret. Appl. Math., 2002)

On a Triangle with the Maximum Area in a Planar Point Set. - Kiyoshi Hosono; Ferran Hurtado; Masatsugu Urabe; Jorge Urrutia (IJCCGGT, 2003)

On the Minimum Size of a Point Set Containing Two Non-intersecting Empty Convex Polygons. - Kiyoshi Hosono; Masatsugu Urabe (JCDCG, 2004)

Constructions from empty polygons. - Tibor Bisztriczky; Kiyoshi Hosono; Gyula Károlyi; Masatsugu Urabe (Period. Math. Hung., 2004)

On the existence of a convex point subset containing one triangle in the plane. - Kiyoshi Hosono (Discret. Math., 2005)

A Minimal Planar Point Set with Specified Disjoint Empty Convex Subsets. - Kiyoshi Hosono; Masatsugu Urabe (KyotoCGGT, 2007)

Cells in any simple polygon formed by a planar point set. - Kiyoshi Hosono (Discret. Math., 2008)

On convex decompositions of a planar point set. - Kiyoshi Hosono (Discret. Math., 2009)

On an empty triangle with the maximum area in planar point sets. - Kiyoshi Hosono (Discret. Math., 2011)

On the minimum number of mutually disjoint holes in planar point sets. - Kiyoshi Hosono (Comput. Geom., 2015)

Specified holes with pairwise disjoint interiors in planar point sets. - Kiyoshi Hosono; Masatsugu Urabe (AKCE Int. J. Graphs Comb., 2020)