Surowiak, Z.; Kozielski, L.; Wodecka-Duś, B.; Wodecka-Duś, B.; Fesenko, E.; Razumovskaya, O.; Reznichenko, L.; Zakharchenko, I. The Influence of Pb Vacancies on the Properties of PZT-Type Ceramic Transducers. archacoust 2000, 25 (2).