Update README.md

Author: maitetaboada

README.md

@@ -5,6 +5,8 @@ The SFU Opinion and Comments Corpus (SOCC) is a corpus for the analysis of onlin
 
 For more information about this work, please see our papers. 
 
+- Kolhatkar, V., N. Thain, J. Sorensen, L. Dixon and M. Taboada (2023) [Classifying constructive comments](https://firstmonday.org/ojs/index.php/fm/article/view/13163). First Monday 28(4). https://doi.org/10.5210/fm.v28i4.13163
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 - Kolhatkar, V.,H. Wu, L. Cavasso, E. Francis, K. Shukla and M. Taboada (2020) [The SFU Opinion and Comments Corpus: A corpus for the analysis of online news comments](https://link.springer.com/article/10.1007%2Fs41701-019-00065-w). <i>Corpus Pragmatics</i> 4(2), 155-190.
 
 - Kolhatkar. V. and M. Taboada (2017) [Using New York Times Picks to identify constructive comments](https://www.aclweb.org/anthology/W17-4218/). [Proceedings of the Workshop Natural Language Processing Meets Journalism](http://nlpj2017.fbk.eu/), Conference on Empirical Methods in Natural Language Processing. Copenhagen. September 2017.