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Alfonso Penta de Peppo; Patrizio Polisca; Fabrizio Tomai; Ruggero De Paulis; Franco Turani; Enrico Zupancich; Luigi Sommariva; Patrizio Pasqualetti; Luigi Chiariello. (1999). Recovery of LV contractility in man is enhanced by preischemic administration of enflurane. , 68(1), 0–118. doi:10.1016/s0003-4975(99)00466-x 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research