Instability of Marangoni flow in the presence of an insoluble surfactant. Experiments A. Mizev, A. Trofimenko, D. Schwabe and A. Viviani Eur. Phys. J. Special Topics, 219 (2013) 89-98 Published online: 19 March 2013 DOI: 10.1140/epjst/e2013-01784-4