De Waal SA, Maier WD, Armstrong RA, Gauert CDK: 2001. Parental magma and emplacement of the stratiform Uitkomst Complex, South Africa. Canadian Mineralogist, 39(2) / Apr, pp 557-571.

Li C, Maier WD, De Waal SA: 2001. The role of magma mixing in the genesis of PGE mineralization in the Bushveld Complex: Thermodynamic calculations and new interpretations. Economic Geology, 96, pp 653-662.

Maier WD, Li C, De Waal SA: 2001. Why are there no major Ni-Cu sulfide deposits in large layered mafic-ultramafic intrusions?. Canadian Mineralogist, 39(2) / Apr, pp 547-556.