@misc{indiciae184a01487471,
  title = {Dynamic equilibrium under periodic perturbations in simple ecosystem models.},
  author = {S D Tuljapurkar and J S Semura},
  year = {1977},
  doi = {10.1016/0022-5193(77)90175-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/886869/},
  note = {Source identifier: 886869}
}