Anthony Kelly is an Emeritus Professor and a DistinguishedResearch Fellow in the Department of Materials Science andMetallurgy at Cambridge University (UK). Professor Kelly has beenemployed in universities, in governmental science (NationalPhysical Laboratory) and in industry (ICI). He was Vice-Chancellorof the University of Surrey (UK) and while there he established theSurrey Research Park. In 1963 with Robin Nicholson he produced thefirst synthesis relating type of dispersion and work hardeningcharacteristics of metals. This has become an SCI citation classic.Since 2000 his main research interest is in using compositeprinciples to control and to modify the thermal expansioncoefficients of materials. He is the principal author of the twoprevious very successful editions of "Crystallography and CrystalDefects" and of other books and has a worldwide reputation inmaterials science. Dr. Kevin Knowles is senior lecturer at Department ofMaterials Science and Metallurgy at the University of Cambridge(UK). He received his DPhil at Oxon (UK) on aspects of thecrystallography of martensitic transformations. Dr. Knowles haslectured and supervised a course on crystallography to third yearundergraduates and he lectures and supervises a course onplasticity and deformation processing to undergraduates. Theresearch interests of his group focus on the relationship betweenmicrostructure and the mechanical and electronic properties ofengineering ceramics.