Free transition on a slender cone in a quiet and a conventional wind tunnel and the effect of ultrasonically absorptive materialsS. Willems, A. Gülhan, C. A. C. Ward and S. P. SchneiderEUCASS Book Series – Advances in AeroSpace Sciences, 9 (2017) 497-516DOI: https://doi.org/10.1051/eucass/2016090497