Undulating membrane structure under mixed extensional-shear flow S.H.J. Idziak, S.E. Welch, M. Kisilak, C. Mugford, G. Potvin, L. Veldhuis and E.B. SirotaEur. Phys. J. E, 6 2 (2001) 139-145DOI: https://doi.org/epje/v6/p139(epje01080)