Mathematical models of a required power design for irrigation with small-sized electric motors - Gabriel Filho, Luís Roberto Almeida; Vérri, J.; Putti, Fernando Ferrari; Cremasco, Camila Pires; Silva, A. O.; Seraphim, Odivaldo José; Halmeman, Maria Cristina Rodrigues; Caneppele, Fernando de Lima (Revista Brasileira de Engenharia de Biossistemas = Brazilian Journal of Biosystems Engineering, 2015)