@book{ BA44501313,
  author    = "Smithells, Colin J. (Colin James)",
  title     = "Tungsten : a treatise on its metallurgy, properties and applications",
  publisher = "Chapman & Hall",
  year      = "1952",
  edition   = "3rd ed",
  URL       = "http://ci.nii.ac.jp/ncid/BA44501313"
}