TY  - RPRT
TI  - Trace element determinations using a 15-keV synchrotron X-ray microprobe.
AU  - F van Langevelde
AU  - R D Vis
PY  - 1991
DO  - 10.1021/ac00020a011
UR  - https://pubmed.ncbi.nlm.nih.gov/1759709/
ID  - 1759709
ER  -