@misc{indiciae9ed3e3bb1dff,
  title = {Evolutionary effects of helium diffusion in population II stars},
  author = {Stringfellow, G. S. and Bodenheimer, P. and Noerdlinger, P. D. and Arigo, R. J.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19830038068},
  note = {Source identifier: 19830038068}
}