Affective norms for english words: Instruction manual and affective ratings, 1999. ,
Independence and bipolarity in the structure of current affect, Journal of personality and social psychology, vol.74, issue.4, p.967, 1998. ,
Visual sentiment analysis of customer feedback streams using geo-temporal term associations, Information Visualization, vol.12, issue.3-4, p.13, 2013. ,
DOI : 10.1177/1473871613481691
Visualization of the sentiment of the tweets, 2011. ,