The paper of Stan van Ginkel et al on Fostering oral presentation performance and quality of feedback is now assigned to an issue of Assessment & Evaluation in Higher Education. It can be downloaded from the Publications list page of this website.
Full reference: Van Ginkel, S., Gulikers, J., Biemans, H.J.A. & Mulder, M (2017). Fostering oral presentation performance: does the quality of feedback differ when provided by the teacher, peers or peers guided by tutor? Assessment & Evaluation in Higher Education, 42(6), 953-966, DOI: 10.1080/02602938.2016.1212984