TY  - RPRT
TI  - [The problem with assessing quality].
AU  - O Möllenberg
AU  - E Kochs
PY  - 1997
DO  - 10.1055/s-2007-995064
UR  - https://pubmed.ncbi.nlm.nih.gov/9333326/
ID  - 9333326
ER  -