Dadykin, A. A.; Naumovets, A. G.; Gorbik, P. P.; Dubrovin, I. V.; Ogenko, V. M.; Filonenko, M. N. Low-Field Electron Emission and Cathode Luminescence of Piezoelectric Films of Oxides and Chalcogenides. Поверхня 2002, 163-176.