Idzkowski, Adam, Wojciech Walendziuk, Pawel Swietochowski, and Zygmunt Warsza. 2017. “Metrological Properties of a Two-Output Transducer for Measuring Sum and Difference of Small Resistances”. Elektronika Ir Elektrotechnika 23 (5):41-45. https://doi.org/10.5755/j01.eie.23.5.19268.