1. For example: the legislation will be enforced in the EU as the draft directives on waste from electrical and electronic equipment (WEEE), restriction of hazardous substances (RoHS) and end-of life vehicles (ELV)
2. B. Jaffe, W. Cook, H. Jaffe, Piezoelectric Ceramics, (Academic, New York, 1971) p.92
3. D. Berlincourt, in Ultrasonic Transducer Materials: Piezoelectric Crystals and Ceramics (ed), O.E. Mattiat, (Plenum, London, 1971), Ch.2
4. A.J. Moulson, J.M. Herbert, Electroceramics––Materials, Properties, Applications, (Chapman & Hall, London, 1990)
5. J.M. Herbert, Ferroelectric Transducers and Sensors, (Gordon and Breach Science, New York, 1982)