E. de . Rizzo, “Purification of hepatitis type b antigen (HB Ag) from human plasma bv heat coagulation”, Rev. Inst. Med. Trop. São Paulo, vol. 17, no. 4, pp. 225–229, Aug. 1975, Accessed: Jun. 28, 2024. [Online]. Available: https://revistas.usp.br/rimtsp/article/view/198519