Alves, C. , Calvo, A. , Castro, A. , Fraile, R. , Evtyugina, M. , Bate-Epey, E. (2013). 'Air Quality in Sports Venues with Distinct Characteristics'. World Academy of Science, Engineering and Technology, Open Science Index 78, International Journal of Environmental and Ecological Engineering, 7(6), 298 - 302.