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J Chem Soc Perkin 1
; 15: 1567-70, 1973.
Article
in English
| MEDLINE
| ID: mdl-4796391
2.
Proc Natl Acad Sci U S A
; 56(2): 709-16, 1966 Aug.
Article
in English
| MEDLINE
| ID: mdl-5229988