@inproceedings{DBLP:conf/aplas/Hamana04,
  author    = {Makoto Hamana},
  title     = {Free S-Monoids: A Higher-Order Syntax with Metavariables},
  booktitle = {APLAS},
  year      = {2004},
  pages     = {348-363},
  ee        = {http://dx.doi.org/10.1007/978-3-540-30477-7_23},
  crossref  = {DBLP:conf/aplas/2004},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/aplas/2004,
  editor    = {Wei-Ngan Chin},
  title     = {Programming Languages and Systems: Second Asian Symposium,
               APLAS 2004, Taipei, Taiwan, November 4-6, 2004. Proceedings},
  booktitle = {APLAS},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {3302},
  year      = {2004},
  isbn      = {3-540-23724-0},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}