TY  - RPRT
TI  - Matrix effects and accuracy assessment. Identifying matrix-sensitive methods from real-time proficiency testing data.
AU  - N S Lawson
AU  - T L Williams
AU  - T Long
PY  - 1993
UR  - https://pubmed.ncbi.nlm.nih.gov/8466404/
ID  - 8466404
ER  -