1. Alper B, Yang H, Haber E, Kandogan E (2011) Opinionblocks: visualizing consumer reviews. In: IEEE VisWeek 2011 workshop on interactive visual text analytics for decision making
2. Barzilay R, Elhadad M (1999) Using lexical chains for text summarization. Adv Autom Text Summ:111–121
3. Baum LE, Petrie T, Soules G, Weiss N (1970) A maximization technique occurring in the statistical analysis of probabilistic functions of markov chains. Ann Math Stat 41(1):164–171
4. Beliga S, Meštrović A, Martinčić-Ipšić S (2015) An overview of graph-based keyword extraction methods and approaches. J Inf Organ Sci 39(1):1–20
5. Bharti SK, Babu KS (2017) Automatic keyword extraction for text summarization: a survey. arXiv:1704.03242