The t -pebbling number is eventually linear in t . Hoffmann, Michael; Matoušek, Jiří; Okamoto, Yoshio; Zumstein, Philipp — 2011 The Electronic Journal of Combinatorics [electronic only]
A tight lower bound for convexly independent subsets of the Minkowski sums of planar point sets. Bílka, Ondřej; Buchin, Kevin; Fulek, Radoslav; Kiyomi, Masashi; Okamoto, Yoshio; Tanigawa, Shin-Ichi; Tóth, Csaba D. — 2010 The Electronic Journal of Combinatorics [electronic only]