1. Amiri, B., N. Ali Moradi and A. Farzadian and B. Rasouli. 2011. Investigation of droughts in Sistan plain using SPI and ZSI indices and determine the most appropriate index using Spearman method. The first national conference of desert, Tehran, Tehran University. 1-9.
2. Asadi Zarch, M.A., B. Sivakumar and A. Sharma. 2014. Droughts in a warming climate: A global assessment of Standardized precipitation index (SPI) and Reconnaissance drought index (RDI). Journal of Hydrology. 526: 183-195. [
DOI:10.1016/j.jhydrol.2014.09.071]
3. Ensafi Moghadam, T. 2008. Enviromental evaluation index and determine the best indicator of the Salt Lake Basin. Journal of grassland and desert of Iran.14 (2): 271-288 (In Persian).
4. Faraj Zadeh, M. 2006. Drought from concept to solution. Armed Forces Geographical Organization, First edition, 16-17 pp (In Persian).
5. Ghatre Samani, S. 2001. Evaluation of drought in Chahar Mahal and Bakhtiari province. The first Conference on Strategies to cope with water scarcity and droughts in Kerman. 1: 36-43 (In Persian).
6. Ghavidel Rahimi, Y., 2006. Test Models for the evaluation of drought and wet Stations in East Azarbaijan Province. Journal of Natural Resources of Iran, 3: 517-530 (In Persian).
7. Hayes, M. J., M.D. Svoboda., D.A. Wilhite and O.V. Vanyarkho. 1999. Monitoring the 1999 drought using the standardized precipitation index. Bull. Am. Meteorol. Soc. 80: 429- 438.
https://doi.org/10.1175/1520-0477(1999)080<0429:MTDUTS>2.0.CO;2 [
DOI:10.1175/1520-0477(1999)0802.0.CO;2]
8. Karimi, V.A., M. Habib Nejad Roshan and A.J. Abkar. 2010. Investigation of drought index in synoptic station in Mazandaran. Journal of Irrigation and Water Engineering. 2 (5): 15-25 (In Persian).
9. Khalighi Sigaroodi, SH., S.A. Sadeghi Sangdehi., KH. Avesta and Y. Ghavidel Rahimi. 2009. The Study of Drought and Wet Year Assessment models for Station in Mazandaran province. Journal of Range and Research, 16(1): 44-54. (In Persian).
10. Yan- Jun, L.I., ZHENG Xiao-dong and L.U. Fan and M.A. Jing. 2012. Analysis of Drought Evolvement Characteristics Based on Standardized Precipitation Index in the Huaihe River Basin. Sciverse ScienceDirect, Procedia Engineering 28: 434-437. [
DOI:10.1016/j.proeng.2012.01.746]
11. Morid, S., V. Smakhtinb and K. Bagherzadeh. 2007. Drought forecasting using artificial neural networks and time series of drought indices. Int. J. Climatol. 27: 2103-2111. [
DOI:10.1002/joc.1498]
12. Naser Zadeh, M.H., E. Ahmadi. 2011. Investigation the performance of meteorological drought index in assessing drought and zoning in Qazvin province. Journal of applied research of geographical science. 12(27): 141-162 (In Persian).
13. Nitzche M.H, 2002. Drought Quantification and preparedness in BRAZIL- the example of sao Paulo state, Working Paper.No7. Londrina-PR, BRAZIL.
14. Nosrati, K., H. Azarnivand. 2003. Regional analysis of the intensity, duration, period of drought using rainfall data, 7(1): 49-61 (In Persian).