@ARTICLE{
author={Saranovac Lazar V,Vucijak Nada M},
year={2016},
title={Evaluation of Uncertainty of Phase Difference Determination in Presence of Bias},
journal={METROLOGY AND MEASUREMENT SYSTEMS},
volume={23},
number={4},
pages={603-614},
document_type={Article},
} 

@ARTICLE{
author={Vucijak Nada M,Saranovac Lazar V},
year={2010},
title={A Simple Algorithm for the Estimation of Phase Difference Between Two Sinusoidal Voltages},
journal={IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT},
volume={59},
number={12},
pages={3152-3158},
document_type={Article},
}