License granted by CT JANSE VAN RENSBURG (CVRENS@SUN.AC.ZA) on 2013-08-15T12:45:47Z (GMT): NON-EXCLUSIVE DISTRIBUTION LICENSE In order for SUNScholar to reproduce, translate and distribute your submission worldwide your agreement to the following terms is necessary. By submitting this license, you grant to the University of Stellenbosch the non-exclusive right to reproduce, translate (as defined below), and/or distribute your submission (including the abstract) worldwide in print and electronic format and in any medium, including but not limited to audio or video. You agree that the University of Stellenbosch may, without changing the content, translate the submission to any medium or format for the purpose of preservation. You also agree that the University of Stellenbosch may keep more than one copy of this submission for purposes of security, back-up and preservation. You represent that the submission is your original work, and that you have the right to grant the rights contained in this license. You also represent that your submission does not, to the best of your knowledge, infringe upon anyone's copyright. If the submission contains material for which you do not hold copyright, you represent that you have obtained the unrestricted permission of the copyright owner to grant the University of Stellenbosch the rights required by this license, and that such third-party owned material is clearly identified and acknowledged within the text or content of the submission. IF THE SUBMISSION IS BASED UPON WORK THAT HAS BEEN SPONSORED OR SUPPORTED BY AN AGENCY OR ORGANIZATION OTHER THAN THE STELLENBOSCH UNIVERSITY, YOU REPRESENT THAT YOU HAVE FULFILLED ANY RIGHT OF REVIEW OR OTHER OBLIGATIONS REQUIRED BY SUCH CONTRACT OR AGREEMENT. The University of Stellenbosch will clearly identify your name(s) as the submitter of the submission, and will not make any alteration, other than as allowed by this license, to your submission. All items in the SUNScholar collection are subject to copyright.