TY - JOUR T1 - Sentiment analysis: A combined approach JO - Journal of Informetrics UR - http://dx.doi.org/10.1016/j.joi.2009.01.003 PY - 2009/01/01 AU - Prabowo R AU - Thelwall M ED - DO - DOI: 10.1016/j.joi.2009.01.003 PB - Elsevier BV VL - 3 IS - 2 SP - 143 EP - 157 Y2 - 2024/12/28 ER -