Ahooghalandari, M., Khiadani, M. and Jahromi, M.E. 2016. “Calibration of Valiantzas’ reference evapotranspiration equations for the Pilbara region, Western Australia.” Theor. Appl. Climatol., pp. 1–12.

Allen, R.G., Pereira, L.S., Raes, D. and Smith, M. 1998. “Crop evapo-transpiration: Guidelines for computing crop water requirements.” FAO, Rome.

A r u n a d e v i , K . , R a m a c h a n d r a n , J . , Vi g n e s h , S . , Visuvanathakumar, S. and Anupriyanka, S. 2017. Comparison of Reference Evapotranspiration in semi arid region. International Journal of Agriculture Sciences, 9(52): 4886-4888.

Djaman, K. et al. 2015. “Evaluation of sixteen reference evapotranspiration methods under Sahelian conditions in the Senegal River Valley.” J. Hydrol.: Reg. Stud., 3: 139–159.

Djaman, K., Irmak, S., Kabenge, I. and Futakuchi, K. (2016). “Evaluation of the FAO-56 Penman-Monteith model with limited data and the Valiantzas’ models for estimating reference evapotranspiration in the Sahelian conditions.” Journal of Irrigation and Drainage Engineering.

Exner-Kittridge, M.G. and Rains, M.C. 2010. “Case study on the accuracy and cost/effectiveness in simulating reference evapotranspiration in West-Central Florida.” J. Hydrol. Eng., 10.1061/(ASCE)HE.1943-5584.0000239, 696–703.

Exner-Kittridge, M.G. 2012. “Closure of ‘Case study on the accuracy and cost/effectiveness in simulating reference evapotranspiration in West-Central Florida’ by Exner- Kittridge, M.G, Rains. M.C.” J. Hydrol. Eng.,

Hargreaves, G.H. and Allen, R.G. 2003. “History and evaluation of Hargreaves evapotranspiration equation.” J. Irrig. Drain. Eng., 129:1(53): 53–63.

Hargreaves, G.H. and Samani, Z.A. 1982. “Estimating potential evapotranspiration.” J. Irrig. Drain. Div., 108(3): 225–230.

Kisi O. 2014. Comparison of different empirical methods for estimating daily reference evapotranspiration in Mediterranean climate. Journal of Irrigation and Drainage Engineering,

Samani, Z. 2000. “Estimating solar radiation and evapotranspiration using minimum climatological data.” J. Irrig. Drain. Eng., 10.1061/(ASCE)0733- 9437(2000)126:4(265), 265–267.

Samani, Z., Hargreaves, G., Tran, V. and Bawazir, S. 2011. “Estimating solar radiation from temperature with spatial and temporal calibration.” J. Irrig. Drain. Eng., 10.1061/ (ASCE)IR.1943-4774.0000342,692–696.

Valiantzas, J.D. 2012. “Discussion of ‘Case study on the accuracy and cost/effectiveness in simulating reference evapotranspiration in West-Central Florida’ by Exner- Kittridge, M.G., Rains. M.C.” J. Hydrol. Eng., 10.1061/ (ASCE)HE.1943-5584.0000394, 224–225.

Valiantzas, J.D. 2006. Simplified versions for the Penman evaporation equation using routine weather data. Journal of Hydrology, 331(3-4): 690–702

Valiantzas, J.D. 2013a. Simplified reference evapotranspiration formula using an empirical impact factor for Penman’s aerodynamic term. Journal of Hydrol. Eng., 18(1): 108–114.

Valiantzas, J.D. 2013b. Simple ET0 forms of Penman’s equation without wind and/or humidity data I theoretical development. Journal of Irrigation and Drainage Engineering, ASCE 139(1): 1–8.

Valiantzas, J.D. 2013c. Simple ET0 forms of Penman’s equation without wind and/or humidity data II: comparisons with reduced set-FAO and other methodologies. Journal of Irrigation and Drainage Engineering, 139(1): 9–19.

Valiantzas, J.D. 2013d. Simplified forms for the standardized FAO-56 Penman–Monteith reference evapotranspiration using limited weather data. Journal of Hydrology, 505: 13–23.

Valiantzas, J.D. 2014a. Closure to “Simple ET0 forms of Penman’s equation without wind and/or humidity data. I: theoretical development” by John D. Valiantzas. Journal of Irrigation and Drainage Engineering, 140(7).

Valiantzas, J.D. 2014b. Discussion of “comparison of different empirical methods for estimating daily reference evapotranspiration in mediterranean climate” by Ozgur Kisi. Journal of Irrigation and Drainage Engineering, 141(4).

Valiantzas, J.D. 2015. Simplified limited data Penman’s ET0 formulas adapted for humid locations. Journal of Hydrology, 524: 701–707.

Valiantzas, J.D. 2017. Modification of the Hargreaves–Samani model for estimating solar radiation from temperature and humidity data. Journal of Irrigation and Drainage Engineering, 144(1): 06017014.

Valiantzas, J.D. 2018a. Discussion of “Evaluation of Valiantzas’ Simplified Forms of the FAO-56 Penman-Monteith Reference Evapotranspiration Model in a Humid Climate” by Koffi Djaman, Daran Rudnick, Valere C. Mel, Denis Mutiibwa, Lamine Diop, Mamadou Sall, Isa Kabenge, Ansoumana Bodian, Hossein Tabari, and Suat Irmak. Journal of Irrigation and Drainage Engineering, 144(7): 07018026.

Valiantzas, J.D. 2018b. Temperature-and humidity-based simplified Penman’s ET0 formulae. Comparisons with temperature-based Hargreaves-Samani and other methodologies. Agricultural Water Management, 208: 326-334.

Valipour, M. 2014. Investigation of Valiantzas’ evapotranspiration equation in Iran. Theor. Appl. Climatol.,