Sources for Albanian History Studies

Hey guys, greetings to you all! I'd like to keep it short and straightforward, so I'm a history graduate working on the Balkan history but lately I'm having problems to enhance my corpus on Albanian history. Aside from Nathalie Clayer, Stavro Skendi, Gezim Skamaj what historians can you suggest me? Would be much better if they are ethnic Albanians but non-Albanian historians with Albanian knowledge is also fine for me. Thanks!