Nadeem Abdul Hamid Zhong Shao Valery Trifonov Stefan Monnier Zhaozhong Ni A Syntactic Approach to Foundational Proof-Carrying Code. 191-229 2003 31 J. Autom. Reasoning 3-4 http://dx.doi.org/10.1023/B:JARS.0000021012.97318.e9 db/journals/jar/jar31.html#HamidSTMN03