Flávio Vinicius Crizóstomo Kock, Elói Alves Silva Filho, Eustáquio Vinícius Ribeiro de Castro, Valdemar Lacerda Jr, and Lúcio Leonel Barbosa. “Relaxometric Study Concerning the Action of A Complexant Agent on Petroleum”. Global Journal of Energy Technology Research Updates, vol. 1, no. 2, Jan. 2015, pp. 96-103, doi:10.15377/2409-5818.2014.01.02.4.