@inproceedings{KiYiCr06, author = "Ik-Soon Kim and Kwangkeun Yi and Cristiano Calcagno", title = "A Polymorphic Modal Type System for Lisp-Like Multi-Staged Languages", booktitle = "Proceedings of The ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages({\bf POPL})", pages = "257--269", year = "2006" }