TY - JOUR T1 - A longitudinal analysis of alternative document models JO - Aslib Proceedings UR - http://dx.doi.org/10.1108/00012530910932311 PY - 2009/01/16 AU - Payne N AU - Thelwall M ED - DO - DOI: 10.1108/00012530910932311 PB - Emerald VL - 61 IS - 1 SP - 101 EP - 116 Y2 - 2024/12/28 ER -