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Bruschini, C.; Cervo, R.; Protti, I.; Turillazzi, S. . (2008). Caste differences in venom volatiles and their effect on alarm behaviour in the paper wasp Polistes dominulus (Christ). Journal of Experimental Biology, 211(15), 2442–2449. doi:10.1242/jeb.017749 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research