Can a Proper Lambda-Model have an R.E. Equational Theory?

Chantal Berline. Can a Proper Lambda-Model have an R.E. Equational Theory?. In Giuseppe F. Italiano, Eugenio Moggi, Luigi Laura, editors, Theoretical Computer Science, 10th Italian Conference, ICTCS 2007, Rome, Italy, October 3-5, 2007, Proceedings. pages 5, World Scientific, 2007.

@inproceedings{Berline07,
  title = {Can a Proper Lambda-Model have an R.E. Equational Theory?},
  author = {Chantal Berline},
  year = {2007},
  researchr = {https://researchr.org/publication/Berline07},
  cites = {0},
  citedby = {0},
  pages = {5},
  booktitle = {Theoretical Computer Science, 10th Italian Conference, ICTCS 2007, Rome, Italy, October 3-5, 2007, Proceedings},
  editor = {Giuseppe F. Italiano and Eugenio Moggi and Luigi Laura},
  publisher = {World Scientific},
  isbn = {981-277-098-4},
}