Robert Harper, Robert Pollack. Type Checking with Universes. Theoretical Computer Science, 89(1):107-136, 1991.
@article{HarperP91, title = {Type Checking with Universes}, author = {Robert Harper and Robert Pollack}, year = {1991}, tags = {type checking}, researchr = {https://researchr.org/publication/HarperP91}, cites = {0}, citedby = {0}, journal = {Theoretical Computer Science}, volume = {89}, number = {1}, pages = {107-136}, }