Characterization of vorticity in pygmy resonances and soft-dipole modes with two-nucleon transfer reactionsR. A. Broglia, F. Barranco, G. Potel and E. VigezziEur. Phys. J. A, 55 12 (2019) 243DOI: https://doi.org/10.1140/epja/i2019-12789-y