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http://journals.cambridge.org/action/displayAbstract?aid=719048
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V. K. NATRAJAN,
Y. WU
and K. T. CHRISTENSEN
(2007).
Spatial signatures of retrograde spanwise vortices in wall turbulence. Journal of Fluid Mechanics, 574
,
pp 155-167
doi:10.1017/S0022112006003788