Ninka, Eniel (2005): Go West: The Western Balkans towards European integration. Unpublished.
Ninka, Eniel (2009): Il territorio ascolano e le sue dinamiche demografiche. Published in: La competitività territoriale. Il governo dei fattori-chiave nel Piceno, FrancoAngeli (2009)
Çela, Eralba; Moretti, Eros and Ninka, Eniel (2008): Italy-Albania The migrant as a bridge between two homelands: The role of remittances. Unpublished.
Favaro, Donata; Ninka, Eniel and Turvani, Margherita (2012): Productivity in innovation: the role of inventor connections and mobility. Unpublished.
