External grid representation for assessing fault ride through capabilities of distributed generation units. - Traian Nicolae Preda; Kjetil Uhlen; Dag Eirik Nordgård; Trond Toftevaag (ISGT Europe, 2012)

Clustering Distributed Generation using the instantaneous Euclidean Distance in polar coordinates. - Traian Nicolae Preda; Kjetil Uhlen; Dag Eirik Nordgård (ISGT Europe, 2013)