00301nam a2200121Ia 4500020001800000082001800018100002400036245004400060260002900104300000900133650001300142700002400155  a9788184892123  a516.028 PRE/C  aPreparata, Franco P 0aComputational geometry:an introdutction  bSpringeraNew Yorkc2009  a398p  aGeometry  aShamos, Michael Lan