Realization of the kilogram by measuring at 100 kV with the voltage balance ETF. - Vojislav Bego; Josip Butorac; Damir Ilic (IEEE Trans. Instrum. Meas., 1999)

Use of precise digital voltmeters for phase measurements. - Damir Ilic; Josip Butorac (IEEE Trans. Instrum. Meas., 2001)

DVM input and leakage resistance analysis in the DVM-based resistance measurement systems. - Roman Malaric; Josip Butorac; Ivan Lenicek (IEEE Trans. Instrum. Meas., 2002)

Improved frequency measurement by means of DMM and verification of its specifications. - Nikica Hlupic; Josip Butorac; Mario Kresic (IEEE Trans. Instrum. Meas., 2005)