Viegas, J.A. 1952. New methodology and equipment – Microfluidoscopy - for reading the Kahn reaction and for performing analyzes, assays or reading the results of flocculation, agglutination, particulates, turbidity and opalescency tests in serum samples, reactions, solution. Instituto Adolfo Lutz Journal - RIAL. 12, 1-2 (Jul. 1952), 179–201. DOI:https://doi.org/10.53393/rial.1952.12.33228.