@article{AlbertG90,
  title = {Rich Models},
  author = {Michael H. Albert and Rami P. Grossberg},
  year = {1990},
  tags = {meta-model, Meta-Environment},
  researchr = {https://researchr.org/publication/AlbertG90},
  cites = {0},
  citedby = {0},
  journal = {Journal of Symbolic Logic},
  volume = {55},
  number = {3},
  pages = {1292-1298},
}