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Haidar, Mauro Abi; Baracat, Edmund Chada; Simões, Manuel de Jesus; Focchi, Gustavo Rubino de Azevedo; Evêncio Neto, Joaquim; Lima, Geraldo Rodrigues de . (1994). Premature ovarian failure: morphological and ultrastructural aspects. Sao Paulo Medical Journal, 112(2), 534–538. doi:10.1590/S1516-31801994000200002 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research