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R. Schmidt-Ullrich and D. F. H. Wallach. (1978). Plasmodium knowlesi-Induced Antigens in Membranes of Parasitized Rhesus Monkey Erythrocytes. Proceedings of the National Academy of Sciences of the United States of America, 75(10), 4949–4953. doi:10.2307/69035 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research