Multianalytical approach to explain the darkening process of hematite pigment in paintings from ancient Pompeii after accelerated weathering experiments

1. Maguregui, M.
2. Castro, K.
3. Morillas, H.
4. Trebolazabala, J.
5. Knuutinen, U.
6. Wiesinger, R.
7. Schreiner, M.
8. Madariaga, J.M.