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>Proceedings of the 21st Brazilian Symposium on Multimedia and the Web,
Manaus, 2015</em>. SBC, 2015,  
pp.93-100.