@article{article, title = {{Search engine coverage bias: evidence and possible causes}}, publisher = {{Elsevier BV}}, url = {{http://dx.doi.org/10.1016/s0306-4573(03)00063-3 }}, year = {{2004}}, month = {{7}}, author = {{Vaughan L and Thelwall M}}, doi = {{10.1016/s0306-4573(03)00063-3}}, volume = {{40}}, journal = {{Information Processing & Management}}, issue = {{4}}, pages = {{693-707}}, note = {{Accessed on 2024/12/28}}}