TY  - RPRT
TI  - Optically active spirotriterpane in petroleum distillates.
AU  - I R Hills
AU  - G W Smith
AU  - E V Whitehead
PY  - 1968
DO  - 10.1038/219243a0
UR  - https://pubmed.ncbi.nlm.nih.gov/5671422/
ID  - 5671422
ER  -