@INPROCEEDINGS{CH98a,
  author = {Calude, C. S. and Hertling, P. H.},
  title = {Computable Approximations of Reals: An Information--Theoretic Analysis
	(Extended Abstract)},
  booktitle = {Proceedings of the 3rd Conference in Information--Theoretic Approaches
	to Logic, Languages, and Computation {(ITALLC'98)}},
  year = {1998},
  editor = {P. Blackburn and N. Braisby and L. Cavedon and S. Glasbey and A.
	Shimojima},
  pages = {29--38},
  address = {Hsitou, Taiwan},
  month = jun,
  keywords = {thi1}
}