The Importance of Methodology [13] (multiple letters)

1. Vaquero, L.M.
2. Sánchez-Montero, F.J.
3. Muriel, C.
4. Schumann, R.
5. Shikora, S.
6. Weiss, J.M.
7. Wurm, H.
8. Strassels, S.
9. Carr, D.B.