Fundamentals of piezoelectric sensorics : mechanical, dielectric, and thermodynamical properties of piezoelectric materials / J. Tichy [et al.], 2010 r=on-line. - Текст : электронный.
Erhart V. Amaterske astronomicke dalekohledy / V.Erhart,J.Erhart, 1989. - 216 s. - Текст : непосредственный.
Fundamentals of piezoelectric sensorics. Mechanical, dielectric, and thermodynamical properties of piezoelectric materials / J. Tichy [et al.], 2010. - XII, 207 p. - Текст : непосредственный.