Citing or linking with a DOI link
A digital object identifier (DOI) can be used to cite and link to the electronic documents. A DOI is guaranteed to never change, so you can use DOI to link to the electronic documents, permanently.
The correct format for citing or creating a link to a document using its DOI is as follows:
http://dx.doi.org/10.1016/j.bbr.2011.03.031
Note: The DOI scheme is administered by the International DOI Foundation. Several world's leading publishers have come together to build a DOI-based document linking scheme known as CrossRef.