RuoppoloV., “Histological assessment of the phytohemagglutinin (PHA) skin test as a method to evaluate inflammatory response and cell mediated immunity in Magellanic penguins (Spheniscus magellanicus)”, Rev. Educ. Cont. Med. Vet. Zootec., vol. 14, nº 1, p. 61-61, jun. 2016.