Mansur Mirovalev (2022-01-11), “Can centuries-old clan rivalry explain the crisis in Kazakhstan?”, in aljazeera.com, Al Jazeera, retrieved 2022-01-17: “But the cornerstone of Kazakhstan’s post-Soviet wealth is the hydrocarbons drilled in the stomping ground of the Younger, or Minor Zhuz in the country’s west, next to the Caspian Sea, one of the biggest sources of untapped hydrocarbons on Earth.”