LINKS UTILI
https://www.centropiaggio.unipi.it/sites/default/files/course/material/Cap8.pdf
https://it.wikipedia.org/wiki/Piezoelettricit%C3%A0
https://accademiadelfitness.convegni.simply-website.it/1/upload/lavagetto.pdf
https://www.scienzemotorie.univaq.it/download/issn1592_5749_11_07_BARRUCCI.pdf
https://www.architettura.unina2.it/docenti/areaprivata/89/documenti/semiconduttori_aggiornato.pdf
https://ilithia.unicampus.it/ilithia/DTDocumentiPDF/DT_24_PapaliaRocco.pdf
https://www.bjultrasonic.com/ultrasonic-technical-info/piezoelectricity-in-bone/?lang=it