BilkaBFKOTT10'

@article{DBLP:journals/combinatorics/BilkaBFKOTT10,
  author    = {Ondrej B\'{\i}lka and
               Kevin Buchin and
               Radoslav Fulek and
               Masashi Kiyomi and
               Yoshio Okamoto and
               Shin-ichi Tanigawa and
               Csaba D. T{\'o}th},
  title     = {A Tight Lower Bound for Convexly Independent Subsets of
               the Minkowski Sums of Planar Point Sets},
  journal   = {Electr. J. Comb.},
  volume    = {17},
  number    = {1},
  year      = {2010},
  ee        = {http://www.combinatorics.org/Volume_17/Abstracts/v17i1n35.html},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}