Yuval Aharoni Dan Halperin Iddo Hanniel Sariel Har-Peled Chaim Linhart On-Line Zone Construction in Arrangements of Lines in the Plane. 139-153 http://link.springer.de/link/service/series/0558/bibs/1668/16680139.htm 1999 conf/wae/1999 Algorithm Engineering db/conf/wae/wae1999.html#AharoniHHHL99