Leiko, O.H., Nyzhnyk, O.I. and Старовойт, Я.І. 2013. Sound fields of piezoceramic emitters with different piezoelectric effect. Electronics and Communications. 18, 5 (Dec. 2013), 50–55. DOI:https://doi.org/10.20535/2312-1807.2013.18.5.142745.