J. R. Vetter, L. G. Maidana, and T. E. S. de Oliveira, “Cutaneous basaloid squamous cell carcinoma in a captive blue-fronted amazon (Amazona aestiva) in Paraguay: gross description, histological and immunohistochemical findings”, Braz. J. Vet. Med., vol. 47, no. 1, p. e002425, Oct. 2025.