Efficient excitation signals for the fast impedance spectroscopyOjarand, Jaan; Min, MartElektronika ir elektrotechnika = Electronics and electrical engineering2014 / p. 144-149 : ill https://doi.org/10.5755/j01.eee.20.5.7115 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS Recent advances in crest factor minimization of multisineOjarand, Jaan; Min, MartElektronika ir elektrotechnika = Electronics and electrical engineering2017 / p. 59-62 : ill https://doi.org/10.5755/j01.eie.23.2.18001 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS