Bartkevičius, V., A. Dosinas, and J. Daunoras. “Differential Method for Indication Sensors”. Elektronika ir Elektrotechnika 64, no. 8 (October 20, 2005): 51-54. Accessed September 29, 2022. https://eejournal.ktu.lt/index.php/elt/article/view/10510.