TY  - RPRT
TI  - A system for fractionating by density gradient procedures.
AU  - R J HECKLY
PY  - 1960
DO  - 10.1016/0003-2697(60)90001-4
UR  - https://pubmed.ncbi.nlm.nih.gov/13712681/
ID  - 13712681
ER  -