1. Preventing sigma phase embrittlement in nickel base superalloys;Boesch;Met. Progr.,1964
2. Some industrial alloying practice and its basis;Barrett;J. Inst. Met.,1972
3. For example, http://www.jst.go.jp/crds/pdf/2015/FR/CRDS-FY2015-FR-05.pdf.
4. Structure of Metals and Alloys;Hume-Rothery,1962
5. Physical Chemisry of Metals;Darken,1953