Braz de Aquino, Cássio Adriano, et al. “The Phenomenon of Precarization and Flexibilization of Labor in the Brazilian Public University: A Case Study on Substitute Teachers”. Athenea Digital. Revista De Pensamiento E investigación Social, vol. 14, no. 1, Feb. 2014, pp. 173-9, doi:10.5565/rev/athenead/v14n1.1004.