Ribeiro, R.F., Aché, L. and Menezes Junior, J.B.F. de 1942. Nicotine contents in the leaves of Nicotiana tabacum and cigarettes. Instituto Adolfo Lutz Journal - RIAL. 2, 2 (Jan. 1942), 423–432. DOI:https://doi.org/10.53393/rial.1942.2.33103.