Influence of hard vssoft ground surfaces on bone accretion in prepubertal footballers

1. Plaza-Carmona, M.
2. Vicente-Rodriguez, G.
3. Martín-García, M.
4. Burillo, P.
5. Felipe, J.L.
6. Mata, E.
7. Casajús, J.A.
8. Gallardo, L.
9. Ara, I.