Higher harmonic compensation and minimisation in DC controlled reactor for electric power systemsTellinen, Juhan; Järvik, JaanEPQU'97 : 4th International Conference Electrical Power Quality and Utilisation, September 23-25, 1997, Cracow, Poland : proceedings1997 / p. 233-236: ill Network friendly converters for steeply and deeply varying load (power supply ESTA)Janson, Kuno; Järvik, JaanEPQU'97 : 4th International Conference Electrical Power Quality and Utilisation, September 23-25, 1997, Cracow, Poland : proceedings1997 / p. 443-448: ill