1. D. R. Askeland , P. P.Fulay and W. J.Wright , The Science and Engineering of Materials , Cengage Learning , Stamford, CT , 6th edn, 2011
2. Defects in Semiconductors: Some Fatal, Some Vital
3. Cathode materials for solid oxide fuel cells: a review
4. Control and Use of Defects in Materials
5. J. William , D.Callister and D. G.Rethwisch , Materials Science and Engineering , John Wiley & Sons, Inc. , Hoboken, NJ , 9th edn, 2014