1. Guide for Olive Orchards in Organic Farming;Alcobia,2001
2. ASAE Standards Engineering Practices Data;ASAE – American Society of Agricultural Engineering,2005
3. Transposition of the Directive n° 86/278/CEE, from November 22nd;Decree-Law n° 446/91,1991
4. Identificação das Potencialidades de Regadio de Alqueva;DGADR – Direção Geral de Agricultura e Desenvolvimento Rural,2005
5. Eco-efficiency Assessment of Meso-level Water Use Systems − the EcoWater Approach;EcoWater,2013