A simple method for labelling and detection of proteinaceous binders in art using fluorescent coumarin derivatives⋆Ooi Su Yin, João P. Prates Ramalho, António Pereira, Sérgio Martins, Cátia Salvador and A. Teresa CaldeiraEur. Phys. J. Plus, 134 2 (2019) 71DOI: https://doi.org/10.1140/epjp/i2019-12478-4