Albuquerque, P.E.P. de et al. 2014. Efficiency of some theories of drainage for tile drain espacing I. Steady-state flow. Pesquisa Agropecuaria Brasileira. 25, 3 (Apr. 2014), 353–363. DOI:https://doi.org/10.1590/S1678-3921.pab1990.v25.13415.