Turbulent spots in channel flow: An experimental study - Large-scale flow, inner structure and low-order modelGrégoire Lemoult, Konrad Gumowski, Jean-Luc Aider and José Eduardo WesfreidEur. Phys. J. E, 37 4 (2014) 25DOI: https://doi.org/10.1140/epje/i2014-14025-2