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D. Desideri; C. Roselli; M. A. Meli; L. Feduzi. (2007). Comparison between the diurnal trends of ozone and radon gas concentrations measured at ground in the semi-rural site of Central Italy. , 273(2), 345–351. doi:10.1007/s10967-007-6871-2 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research