Nozawa, C. M., et al. “ Detection of Astrovirus-Like in Diarrhoeic Stool and Its Coexistence With Rotavirus ”. Revista Do Instituto De Medicina Tropical De São Paulo, vol. 27, no. 5, Oct. 1985, pp. 238-41, https://revistas.usp.br/rimtsp/article/view/87414.