@misc{indiciaedc44e00ca84b,
  title = {Testing twin means and estimating genetic variance: basic methodology for the analysis of quantitative twin data.},
  author = {J C Christian},
  year = {1979},
  doi = {10.1017/s0001566000009314},
  url = {https://pubmed.ncbi.nlm.nih.gov/397708/},
  note = {Source identifier: 397708}
}