TY  - RPRT
TI  - Half a guard is better...
AU  - M J Leadbeater
AU  - M R Nott
PY  - 1990
DO  - 10.1111/j.1365-2044.1990.tb14763.x
UR  - https://pubmed.ncbi.nlm.nih.gov/2337226/
ID  - 2337226
ER  -