1. Factor rotations;Abdi,2003
2. Chemometrics in Aanlytical Chemistry;Adams,1995
3. Impact of imperfect rainfall knowledge on the efficiency and the parameters of watershed models;Andreassian;J. Hydrol.,2001
4. Standard Methods for the Examination of Water and Wastewater;APHA,2005
5. Water Quality – Sampling – Guidance on the Design of Sampling Programs, Sampling Techniques and the Preservation and Handling of Samples;AS/NZS,1998