TY - JOUR T1 - Web impact factors and search engine coverage JO - Journal of Documentation UR - http://dx.doi.org/10.1108/00220410010803801 PY - 2000/04/01 AU - Thelwall M ED - DO - DOI: 10.1108/00220410010803801 PB - Emerald VL - 56 IS - 2 SP - 185 EP - 189 Y2 - 2024/12/28 ER -