Gomez Alvarez-Arenas T, Diez L. Ultrasonic Single Element and Sectorized Array Transducers with Omnidirectional 2D Field Distribution for Non-Contact Human-Machine Interface and Echo-Location. ELEKTRON ELEKTROTECH [Internet]. 2017Jul.31 [cited 2024Apr.25];23(4):51-5. Available from: https://eejournal.ktu.lt/index.php/elt/article/view/18722