TY  - RPRT
TI  - Beating the blocked balloon.
AU  - R L Cottingham
PY  - 1987
DO  - 10.1111/j.1365-2044.1987.tb03114.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3497591/
ID  - 3497591
ER  -