Benard–Marangoni convection within isotropic droplets in overheated free standing smectic films Elena S. Pikina, Boris I. Ostrovskii and Sergey A. Pikin Eur. Phys. J. E, 44 6 (2021) 81 Published online: 19 June 2021 DOI: 10.1140/epje/s10189-021-00082-1