Asteroseismology of evolved stars to constrain the internal transport of angular momentum - I. Efficiency of transport during the subgiant phaseP. Eggenberger, S. Deheuvels, A. Miglio, S. Ekström, C. Georgy, G. Meynet, N. Lagarde, S. Salmon, G. Buldgen, J. Montalbán, F. Spada and J. BallotA&A, 621 (2019) A66DOI: https://doi.org/10.1051/0004-6361/201833447