Muundjua, M., Hart, R.J., Gilder, S.A., Carporzen, L. i inni. Magnetic imaging of the Vredefort impact crater, South Africa. „Earth and Planetary Science Letters”. 261 (3), s. 456–468, 2007. DOI: 10.1016/j.epsl.2007.07.044. Bibcode: 2007E&PSL.261..456M.
Muundjua, M., Hart, R.J., Gilder, S.A., Carporzen, L. i inni. Magnetic imaging of the Vredefort impact crater, South Africa. „Earth and Planetary Science Letters”. 261 (3), s. 456–468, 2007. DOI: 10.1016/j.epsl.2007.07.044. Bibcode: 2007E&PSL.261..456M.