Noise-Based Volume Rendering for the Visualization of Multivariate Volumetric Data 2013 (1) R Khlebnikov, B Kainz, M Steinberger, D Schmalstieg, Noise-Based Volume Rendering for the Visualization of Multivariate Volumetric Data, IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS, volume 19, issue 12, pp.2926–2935, 2013