Nyambe, Imasiku A.; Utting, John (1997). Stratigraphy and palynostratigraphy, Karoo Supergroup (Permian and Triassic), mid-Zambezi Valley, southern Zambia. Journal of African Earth Sciences. 24 (4): 563. Bibcode:1997JAfES..24..563N. doi:10.1016/S0899-5362(97)00081-X.
Bordy, Emese M.; Catuneanu, Octavian (2001). Sedimentology of the upper Karoo fluvial strata in the Tuli Basin, South Africa. Journal of African Earth Sciences. 33 (3–4): 605. Bibcode:2001JAfES..33..605B. doi:10.1016/S0899-5362(01)00090-2.
Nyambe, Imasiku A.; Utting, John (1997). Stratigraphy and palynostratigraphy, Karoo Supergroup (Permian and Triassic), mid-Zambezi Valley, southern Zambia. Journal of African Earth Sciences. 24 (4): 563. Bibcode:1997JAfES..24..563N. doi:10.1016/S0899-5362(97)00081-X.
Bordy, Emese M.; Catuneanu, Octavian (2001). Sedimentology of the upper Karoo fluvial strata in the Tuli Basin, South Africa. Journal of African Earth Sciences. 33 (3–4): 605. Bibcode:2001JAfES..33..605B. doi:10.1016/S0899-5362(01)00090-2.