- ISBN 978-0-306-46409-6. PMID 10897422. Orwa JA,
Govaerts C,
Busson R,
Roets E, Van
Schepdael A,
Hoogmartens J (April 2001). "Isolation and
structural characterization...
- PMC 2907661. PMID 19874036. Orwa JA,
Govaerts C,
Busson R,
Roets E, Van
Schepdael A,
Hoogmartens J (April 2001). "Isolation and
structural characterization...