TY  - RPRT
TI  - Serial extraction: a continuous diagnostic and decisional process.
AU  - T M Graber
PY  - 1971
DO  - 10.1016/0002-9416(71)90197-7
UR  - https://pubmed.ncbi.nlm.nih.gov/4943019/
ID  - 4943019
ER  -