Shrestha MM, Ropakheti B, Bhattarai U, Adhikari A, Thakur S. Digital Ultrasonic Sensing Device with Programmable Frequency: Development and Analysis. Adv. Engin. & Technol. [Internet]. 2021 Sep. 10 [cited 2024 Nov. 22];1(1):33-45. Available from: https://nepjol.info./index.php/aet/article/view/39658