1. Eurostat. Agricultural Statistical Yearbook, 2004.
2. National Statistical Service of Greece (NSSG). Agricultural statistical yearbook 2004, 2004.
3. National Statistical Service of Greece (NSSG). Agricultural statistical yearbook 1981, 1981.
4. National Statistical Service of Greece (NSSG). Agricultural statistical yearbook 1987, 1987.
5. Energy inputs and outputs of main crops cultivated in Greece;Tsatsarelis,2000