Potential direct mechanisms involved in the action of humic substances on plant development

1. Mora, V.
2. Jannin, L.
3. Bacaicoa, E.
4. Arkoun, M.
5. Fuentes, M.
6. Olaetxea, M.
7. Baigorri, R.
8. Garnica, M.
9. Francisco, S.S.
10. Zamarreño, A.M.
11. Ourry, A.
12. Etienne, P.
13. Laíné, P.
14. Yvin, J.C.
15. Garcí-Mina, J.M.