TY  - RPRT
TI  - A nurse staffing system based upon assignment difficulty.
AU  - R B Norby
AU  - L E Freund
AU  - B Wagner
PY  - 1977
DO  - 10.1097/00005110-197707090-00001
UR  - https://pubmed.ncbi.nlm.nih.gov/243004/
ID  - 243004
ER  -