Caldas Amaral, S. M., A. M. Pacheco, and A. Alves de Matos. “Anti-Cytoplasmic Anti-Bodies of Neutrophils and Monocytes - Appreciation of Their Use in Clinical Practise”. Internal Medicine, vol. 6, no. 3, Sept. 1999, pp. 199-02, https://revista.spmi.pt/index.php/rpmi/article/view/2075.