1. Multi-lingual and multi-cultural conditions;Arce,2003
2. Respondent burden;Ampt,2003
3. Arentze, T., Chauke, B., Lombard, M., Del Mistro, R., Kriel, I., Makwela, M., van der Reis, P., Timmermans, H., 2004. The applicability of stated preference among less-literate commuters. South African-Netherlands Programme on Alternatives in Development.
4. Behrens, R., 2002. Matching networks to needs: travel needs and the configuration and management of local movement networks in South African cities. Thesis presented for the Degree of Doctor of Philosophy, University of Cape Town.
5. Looking beyond commuter travel in Cape Town: methodological lessons from the application of an activity-based travel survey;Behrens,2003