TY  - RPRT
TI  - Calcium antagonists in COPD.
AU  - C Spedini
AU  - C Lombardi
PY  - 1986
DO  - 10.1378/chest.89.2.315b
UR  - https://pubmed.ncbi.nlm.nih.gov/3943400/
ID  - 3943400
ER  -