Manfred Brill Hans Hagen Hans-Christian Rodrian Wladimir Djatschin Stanislav V. Klimenko Streamball Techniques for Flow Visualization. 225-231 1994 conf/visualization/1994 IEEE Visualization db/conf/visualization/visualization1994.html#BrillHRDK94 http://dx.doi.org/10.1109/VISUAL.1994.346315