Recursive Assertions are not enough - or are they?

Krzysztof R. Apt, Jan A. Bergstra, Lambert G. L. T. Meertens. Recursive Assertions are not enough - or are they?. Theoretical Computer Science, 8:73-87, 1979.

@article{AptBM79,
  title = {Recursive Assertions are not enough - or are they?},
  author = {Krzysztof R. Apt and Jan A. Bergstra and Lambert G. L. T. Meertens},
  year = {1979},
  researchr = {https://researchr.org/publication/AptBM79},
  cites = {0},
  citedby = {0},
  journal = {Theoretical Computer Science},
  volume = {8},
  pages = {73-87},
}