1. ISO 5690 Equipment for distributing fertilisers — Test methods — Part 1: Full width fertiliser distributors,1985
2. ASAE. S341.2,1999
3. CEN. EN 12761-1,2,3: Sprayers and Liquid Fertilizer Distributors — Environmental Protection,1999
4. AFSA,2001
5. FQCNZ,2003