Leitão, Erllan Tavares Costa, et al. “Comparison Between Penman-Monteith and Hargreaves-Samani to Obtain ETo in Rainy and Dry Years”. Revista Verde De Agroecologia E Desenvolvimento Sustentável, vol. 15, no. 4, Oct. 2020, pp. 398-03, doi:10.18378/rvads.v15i4.7500.