Gateways : International Journal of Community Research and Engagement
The forty or more different clan groups of Australian Aboriginal people who Jive on or near the coast and islands of north-east Arnhem Land, in the Northern Territory, are collectively known as Yolngu. Yolngu law dictates that all marriages must be outside the clan group, a principle which has given rise to complex ceremonial and economic exchange relationships among quite separate groups. Consequently, Yolngu have a strong tradition of negotiation across cultural boundaries s, while sharing carefully and respectfully with non-Yolngu was already an established practice before the Europeans arrived, as Yolngu worked for, and traded with Macassans who came annually to their shores from the north-west, from what is now known as Indonesia.
Christie, Michael, "Yolngu Studies: A case study of Aboriginal community engagement" (2008). Service Learning, General. 208.