Two-step verification in the teaching / learning process

1. González Arrieta, A.
2. López-Sánchez, D.
3. Vega Cruz, P.I.
4. Sánchez Lázaro, Á.L.
5. Pérez Lancho, B.
6. Hernández Simón, J.A.
7. García-Bermejo-Giner, J.R.