@misc{indiciaeb8bcfd428236,
  title = {Challenges--then and now.},
  author = {G W Hambrick},
  year = {1972},
  doi = {10.1111/1523-1747.ep12627321},
  url = {https://pubmed.ncbi.nlm.nih.gov/4569100/},
  note = {Source identifier: 4569100}
}