White, Ann Marie, Linxiao Bai, Christopher Homan, Melanie Funchess, Catherine Cerulli, Amen Ptah, Deepak Pandita, and Henry Kautz. “Does Reciprocal Gratefulness in Twitter Predict Neighborhood Safety?: Comparing 911 Calls Where Users Reside or Use Social Media”. Proceedings of the International AAAI Conference on Web and Social Media 12, no. 1 (June 15, 2018). Accessed May 3, 2024. https://ojs.aaai.org/index.php/ICWSM/article/view/15066.