@article{Romankiewicz:1976,
  author  = "F. Romankiewicz",
  title   = "A method of testing the content of nonmetallic impurities in zinc alloy castings",
  journal = "International Cast Metals Journal",
  volume  = "Vol. 1",
  number  = "no 4",
  pages   = "13--17",
  year    = "1976",
}