Rapold, Christian J. Language and Cognition Group, MPI for Psycholinguistics, Max Planck Society; Language documentation and data mining, MPI for Psycholinguistics;
Rapold_Dimensions_of_Variability_Sou_Afr_Hum_2008.pdf (Publisher version), 3MB
Rapold, C. J., & Widlok, T. (2008). Dimensions of variability in Northern Khoekhoe language and culture. Southern African Humanities, 20, 133-161. Retrieved from http://www.sahumanities.org.za/RapoldWidlok_203.aspx.