TY  - RPRT
TI  - A comparison of reference method values for calcium, lithium and magnesium with method-dependent assigned values.
AU  - W R Külpmann
AU  - R Buchholz
AU  - C Dyrssen
AU  - D Ruschke
PY  - 1989
DO  - 10.1515/cclm.1989.27.9.631
UR  - https://pubmed.ncbi.nlm.nih.gov/2607323/
ID  - 2607323
ER  -