Pienaar, W. “A Proposed Regulatory Framework for Road and Rail Freight Transport in South Africa”. Suid-Afrikaans Tydskrif Vir Natuurwetenskap En Tegnologie / <i>South African Journal of Science and Technology</I&gt;, Vol. 26, no. 4, Sept. 2007, pp. 265-78, doi:10.4102/satnt.v26i4.140.