• "The Pjava Recompiler: Creating an Optimized Parse of Java Byte Codes" by Mingbiao Fei and Chuck Willis - May 7, 1997
• "Optimizing Java Compilers: Comparing Optimizations of Java Source to Byte Code Compilers" by Chuck Willis - December 16, 1997
• On the Design and Implementation of Security Services for Dynamic Security Systems by Chuck Willis - August 12, 1998

I also worked on the Cherubim Project at the University of Illinois as a Research Assistant