Azuma, Mariana Hiromi, et al. “Evaluation of Anticholinesterasic Substances in Cigarettes Manufactured in Brazil through a Human Butyrylcholinesterase Activity Inhibition Method”. Estudos De Biologia, vol. 31, nº 73/75, novembro de 2009, doi:10.7213/reb.v31i73/75.22843.