@inproceedings{HullsRAMiCS,
  author    = {Roland Gl{\"{u}}ck},
  title     = {Isolated Sublattices and Their Application to Counting Closure Operators},
  booktitle = {Relational and Algebraic Methods in Computer Science - 19th International
               Conference, RAMiCS 2021, Marseille, France, November 2-5, 2021, Proceedings},
  series    = {Lecture Notes in Computer Science},
  volume    = {13027},
  publisher = {Springer},
  editor    = {Fahrenberg, U. and
               Gehrke, M. and
               Santocanale, L. and
               Winter, M.},
  pages     = {192--208},
  year      = {2021},
  url       = {https://doi.org/10.1007/978-3-030-88701-8\_12},
  doi       = {10.1007/978-3-030-88701-8\_12},
}