Bas J. D. Vermulst Jorge L. Duarte C. G. E. Wijnands Elena A. Lomonova Single-stage three-phase AC to DC conversion with isolation and Bi-directional power flow. 4378-4383 2014 IECON https://doi.org/10.1109/IECON.2014.7049161 conf/iecon/2014 db/conf/iecon/iecon2014.html#VermulstDWL14