TY  - JOUR 
T1  - Reference evapotranspiration based on class A pan evaporation
JO  - Scientia Agricola
A1  - Conceição, Marco Antônio Fonseca
SN  - 0103-9016
UL  - 10.1590/S0103-90162002000300001
VL  - 59 
Y1  - 2002
PB  - Brasil 
ER  -