Vossen, Rüdiger. Zigeuner. Ullstein Sachbuch, Frankfurt 1983 (in German). A very complete book about Rroma in general. Covers history, traditions, as well as a wealth of other items. THis book is originally a compilation for an exhibition, but the author managed to give a good overview of Rroma in general, and many references.
Erich, Renate. Roma in den ehemaligen kommunistischen Staaten Ost und Südost europas. In: Roma, das unbekannte Volk, Eds. M. Heinschink, U. Hemetek. Vienna, 1994.
Kochanowski, Vania de Gila Roma. History of their Indian Origins. In: Roma, Vol 4.
Liégeois, Jean-Pierre. Roma, Gypsies, Travellers. Council of Europe, 1994.
Reemtsma, Katrin. Sinti und Roma. Munich, Beck Verlag, 1996.