@misc{indiciaeb60509cccf07,
  title = {Functional Boolean models for systems with continuous variables.},
  author = {L E Ostrander and J E Brand},
  year = {1973},
  doi = {10.1016/0022-5193(73)90265-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/4692358/},
  note = {Source identifier: 4692358}
}