Settlement dates to ca. 5800 to 2050 BC. It gave the name to the period. This term was coined at a conference in Baghdad in 1930.
See:
- Harry R. Hall et C. Leonard Woolley, Ur Excavations, vol. I (Al-‘Ubaid), Oxford 1927
- Pinhas Delougaz, "A Short Investigation of the Temple at Al-‘Ubaid", Iraq 3 (1938), pp. 1-11.
- https://www.cemml.colostate.edu/cultural/09476/iraq05-073.html
- Jean Louis Huot, hasło Ubaid, w: Eric M. Meyers (wyd.), The Oxford Encyclopedia of Archaeology in the Near East, vol. V, Oxford University Press, New York - Oxford 1997, pp.. 251-252.
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Appendix, The Southern Margins of Sumer – Archaeological Survey of the Area of Eridu and Ur, Henry T. Wright, 1966, in ADAMS R. McC. (1981), Heartland of Cities. Surveys of Ancient Settlement and Land Use on the Central Floodplain of the Euphrates, University of Chicago Press ( https://archive.org/details/heartlandofcitie0000adam/page/n5/mode/2up )
- WIKIPEDIA, Tell al-Ubaid (https://fr.wikipedia.org/wiki/Tell_al-Ubaid)