@misc{indiciae2d93890bb232,
  title = {Small perturbations in nonlinear age-structured population equations.},
  author = {E N Boulanger},
  year = {1994},
  doi = {10.1007/bf00573458},
  url = {https://pubmed.ncbi.nlm.nih.gov/8083618/},
  note = {Source identifier: 8083618}
}