@book{ BB23792099, author = "Mittemeijer, E. J. and Somers, M. A. J.", title = "Thermochemical surface engineering of steels", publisher = "Woodhead Pub.", year = "2015", series = "Woodhead publishing series in metals and surface engineering", number = "no. 62", URL = "https://ci.nii.ac.jp/ncid/BB23792099" }