1. Precision Ultrasonic Meters of Fluid Level in Sealed Containers;Bohushevych;Mìkrosist. elektron. akust,2019-02-28
2. Urovnemer ul’trazvukovoj portativnyj UUP1-P1. Rukovodstvo po ekspluatacii, Kyiv OOO ND Ltd [Portable ultrasonic level gauge UUP1-P1. Operations manual, Kyiv, ND, Ltd], [Online]. Available: http://www.eriskip.ru/disc/pdf/UUP1P1.pdf. Accessed on: April 18, 2017.
3. Urovnemer ul’trazvukovoj perenosnoj UZUM-2-P. Rukovodstvo po ekspluatacii, S.-Peterburg, ZAO “SPEK” [Portable ultrasonic level gauge UZUM-2-P. Operations manual, S.-Peterburg, “SPEK”, JSC], [Online]. Available: http://spec.ru/files/catalog_ files/846079.pdf. Accessed on: May 30, 2017.
4. Texas Instruments. TDC 1000, [Online]. Available: http://www.ti.com/lit/ds/symlink/tdc1000.pdf. Accessed on: July 7, 2017.
5. Avtomatizirovannyj ul’trazvukovoj urovnemer AUZUR-02, N. Novgorod [Automated ultrasonic level gauge AUZUR-02, N. Novgorod], [Online]. Available: http://www.vvgnn.com/ data/pages/files/file.1323775818.pdf. Accessed on: May 30, 2017.