You seem to be attempting to access an item that has been removed from the repository.
The item you are trying to access was a duplicate of:
Melchels, Ferry P.W. and Feijen, Jan and Grijpma, Dirk W. (2009) A poly(d,l-lactide) resin for the preparation of tissue engineering scaffolds by stereolithography. Biomaterials, 30 (23-24). pp. 3801-3809. ISSN 0142-9612