The 4 references in paper A. Jezhora A., V. Rubanik V., А. Джежора А., В. Рубаник В. (2015) “ДВУХПАРАМЕТРОВЫЙ ДАТЧИК УРОВНЯ ЖИДКОСТИ // THE TWO PARAMETER SENSORS OF THE LIQUID LEVEL” / spz:neicon:pimi:y:2012:i:1:p:56-61

1
Zhao, Y.R. New Type Multielectrode Capacitance Sensors for Liquid Level. Journal of Physics: Conference Series. – 2006. – Vol. 48. P.
(check this in PDF content)
1

(check this in PDF content)
2

(check this in PDF content)
3

(check this in PDF content)