> :: . http://iopscience.iop.org/0957-0233/7/11/015/pdf/e61113.pdf >=20 > Twenty quid just to see the article??? >=20 > Colin Downloaded just fine for free, for me, from that link. --=20 Scanned by iCritical. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .