3C.K.Huen,I.A.Frigaard,D.M.Martinez. Experimental studies of multi-layer flows using avisco-plastic lubricant[J].Journal of Non-Newtonian Fluid Mechanics,2007.150-161.
4I.A.Frigaard,S Leimgruber,O Scherzer. Variational methods and maximal residual wall layers[J].Journal of Fluid Mechanics,2003.37-65.
5M.Allouche,I.A.Frigaard,G.Sona. Static wall layers in the displacement of two visco-plastic fluids in a plane channel[J].Journal of Fluid Mechanics,2000.243-277.