Search strategies for supermassive stars in young clusters and application to nearby galaxies A. Kuruvanthodi, D. Schaerer, M. Messa, A. Adamo, C. Usher, C. Charbonnel and R. Marques-Chaves A&A, 674 (2023) A140 Published online: 15 June 2023 DOI: 10.1051/0004-6361/202245695