Marshall W. Bern David Eppstein Pankaj K. Agarwal Nina Amenta L. Paul Chew Tamal K. Dey David P. Dobkin Herbert Edelsbrunner Cindy Grimm Leonidas J. Guibas John Harer Joel Hass Andrew Hicks Carroll K. Johnson Gilad Lerman David Letscher Paul E. Plassmann Eric Sedgwick Jack Snoeyink Jeff Weeks Chee-Keng Yap Denis Zorin Emerging Challenges in Computational Topology http://arxiv.org/abs/cs.CG/9909001 1999 CoRR cs.CG/9909001 db/journals/corr/corr9909.html#cs-CG-9909001 informal publication