@misc{indiciae1378266cf513,
  title = {Some profile methods useful with singular covariance matrices.},
  author = {E Marks},
  year = {1968},
  doi = {10.1037/h0026142},
  url = {https://pubmed.ncbi.nlm.nih.gov/5681307/},
  note = {Source identifier: 5681307}
}