Analysis of information sources in references of the Wikipedia article "Revolução neolítica" in Portuguese language version.
Our earliest evidence for this new technology comes [...] from the lowland steppe of Khuzistan. [...] Once irrigation appeared, the steppe greatly increased its carrying capacity and became, in fact, the dominant growth centre of the Zagros region between 5500 and 4000 B.C.
Archeological investigations on the Deh Luran Plain of Iran have provided a model for the internal dynamics of the culture sequence of prehistoric Khuzistan [...]. Somewhere between 5500 and 5000 B.C. in the Sabz phase of the Deh Luran Plain, irrigation water was apparently diverted from stream channels in a fashion similar to that employed in early Mesopotamia.