Evaluation of mesoporous silicas functionalized with C18 groups as stationary phases for the solid-phase extraction of steroid hormones in milk

1. Pérez-Fernández, V.
2. Morante-Zarcero, S.
3. Pérez-Quintanilla, D.
4. García, M.A.
5. Marina, M.L.
6. Alonso, I.S.