Seismic evidence for a weak radial differential rotation in intermediate-mass core helium burning starsS. Deheuvels, J. Ballot, P. G. Beck, B. Mosser, R. Østensen, R. A. García and M. J. GoupilA&A, 580 (2015) A96DOI: https://doi.org/10.1051/0004-6361/201526449