Therese C. Biedl Burkay Genc Cauchy's Theorem for Orthogonal Polyhedra of Genus 0. 71-82 2009 ESA http://dx.doi.org/10.1007/978-3-642-04128-0_7 conf/esa/2009 db/conf/esa/esa2009.html#BiedlG09