A multi-analytical approach for the characterisation of 20th century paintings Flavia Fiorillo, Chiara Matteucci, Martina Cataldo, Salvatore Andrea Apicella and Mariangela Vandini Eur. Phys. J. Plus, 134 7 (2019) 373 Published online: 31 July 2019 DOI: 10.1140/epjp/i2019-12752-5