@Inproceedings{EPTCS109.1,
  author    = {Liu, Yu David},
  year      = {2013},
  title     = {Variant-Frequency Semantics for Green Futures},
  editor    = {Gay, Simon and Kelly, Paul},
  booktitle = {{\rm Proceedings Fifth Workshop on}
               Programming Language Approaches to Concurrency- and Communication-cEntric Software,
               {\rm Tallinn, Estonia, 31 March 2012}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {109},
  publisher = {Open Publishing Association},
  pages     = {1-6},
  doi       = {10.4204/EPTCS.109.1},
}