@misc{indiciaec5b55345f017,
  title = {The cluster phenomenon: an unspecific feature?},
  author = {O Sjaastad and D de Souza Carvalho and Y D Fragoso},
  year = {1988},
  doi = {10.1046/j.1468-2982.1988.0802061.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/3401917/},
  note = {Source identifier: 3401917}
}