Ballona, Pedro Rego, Patrick Prado, Jussara Marques de Almeida, and Humberto Torres Marques Marques-Neto.
"Analyzing The Influence Of Pope's Tweets On His Followers' Mood." <em>Anais do XXI Simpósio Brasileiro de Sistemas Multimídia e Web,
Manaus, 2015</em>. SBC, 2015,  
pp.93-100.