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Michael L. Montpetit; Sharon Cassol; Teresa Salas; Michael V. O'Shaughnessy. (1992). OLIGSCAN: a computer program to assist in the design of PCR primers homologous to multiple DNA sequences. , 36(2), 119–128. doi:10.1016/0166-0934(92)90143-2 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research