Active filters based on GIC-arrayKukk, VelloECCTD '95 : proceedings of the 12th European Conference on Circuit Theory and Design : Istanbul, Turkey, 27-31 August 1995. Volume 1 of 21995 / p. 615-618

An efficient switched-inductor filter for single-phase diode rectifiersSakkos, Tiiu; Sarv, VelloBaltic electrical engineering review1998 / 1, p. 25-29: ill

Bringing the Sallen-Key biquad back to workGaunholt, Hans; Guldbrandsen, BritheBEC'96 : the 5th Biennial Baltic Electronics Conference, October 7-11, 1996, Tallinn, Estonia : proceedings1996 / p. 413-416: ill

Efficient two-stage active filters for power factor correction of diode rectifiersSakkos, Tiiu; Sarv, VelloPEMC'98 : 8th International Power Electronics & Motion Control Conference : Prague, Czech Republic, 8-10 September, 1998 : proceedings1998 / p. 7-1 - 7-6: ill

Experimental results of parallel active filter implementation in nonideal power gridHusev, Oleksandr; Blinov, Andrei; Vinnikov, DmitriTechnological Inovation for Value Creation : third IFIP WG 5.5/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2012, Costa de Caparica, Portugal, February 27-29, 2012 : proceedings2012 / p. 291-298 : ill https://link.springer.com/chapter/10.1007/978-3-642-28255-3_32

New active diode-switched transformer filters to improve power factor of three-phase diode rectifiers with capacitive smoothingSakkos, Tiiu; Sarv, VelloProceedings of the Estonian Academy of Sciences. Engineering1997 / 3, p. 158-170: ill

Power factor correction of single-phase diode rectifiers by a second-harmonic series-resonant filter stageSakkos, Tiiu; Sarv, VelloBEC'98 : the 6th Biennial Conference on Electronics and Microsystems Technology, October 7-9, 1998, Tallinn, Estonia : proceedings1998 / p. 223-226: ill

Transformerless boost AC/DC converter with the front-end active filterHusev, Oleksandr7th International Conference-workshop Compatibility and Power Electronics : CPE 2011 : Tallinn, Estonia, June 3, 2011 : student forum2011 / p. 77-81 : ill