TY  - RPRT
TI  - [Further thoughts on sampling techniques].
AU  - P Suárez Gil
AU  - J C Alonso Lorenzo
PY  - 2003
DO  - 10.1016/s0212-6567(03)79347-0
UR  - https://pubmed.ncbi.nlm.nih.gov/14697193/
ID  - 14697193
ER  -