TY  - RPRT
TI  - Insomnia.
AU  - P Mitchell
AU  - A Mant
PY  - 1991
DO  - 10.5694/j.1326-5377.1959.tb59283.x
UR  - https://pubmed.ncbi.nlm.nih.gov/1988792/
ID  - 1988792
ER  -