Heewan Park Seokwoo Choi Hyun-il Lim Taisook Han Detecting Java Theft Based on Static API Trace Birthmark. 121-135 2008 IWSEC http://dx.doi.org/10.1007/978-3-540-89598-5_8 conf/iwsec/2008 db/conf/iwsec/iwsec2008.html#ParkCLH08