@inbook{7381,
  author = {D. Perry and Peter Conti},
  title = {H/He Ratios for WN Stars in the LMC and the Galaxy},
  year = {1982},
  number = {International Astronomical Union/Union Astronomique Internationale},
  pages = {109-112},
  publisher = {Springer Netherlands},
  address = {Dordrecht},
  isbn = {978-90-277-1470-1},
  doi = {10.1007/978-94-009-7910-9_14},
}