Normal and counter Evershed flows in the photospheric penumbra of a sunspot - SPINOR 2D inversions of Hinode-SOT/SP observationsA. Siu-Tapia, A. Lagg, S. K. Solanki, M. van Noort and J. JurčákA&A, 607 (2017) A36DOI: https://doi.org/10.1051/0004-6361/201730647