“…In addition, the production function can be influenced by various factors which are beyond the control of the evaluated observation. Observed in: Taylor and Johnes (1989), Beasley (1990Beasley ( ) (1995, Kao and Yang (1992), Johnes and Johnes (1993, Sinuany et al (1994), , , Athanassopoulos and Shale (1997), , Haksever and Muriagishi (1998), McMillan and Datta (1998), Sarrico and Dyson (2000), Thursby (2000), Ying and Sung (2000), Avkiran (2001), Korhonen et al (2001), Abbott and Doucouliagos (2002) Koksal and Nalcaci (2006), McMillan and Chan (2006), Agasisti and Salerno (2007), Anderson et al (2007), Fandel (2007, Tauer et al (2007), , Johnes and Yu (2008), Kao and Hung (2008), Kuo and Ho (2008), Ray and Jeon (2008), Worthington and Lee (2008) (2010), Dehnokhalaji et al (2010), Kantabutra and Tang (2010), Katharaki and Katharakis (2010), Kempkes and Pohl (2010), Rayeni and Saljooghi (2010), Agasisti et al (2011Agasisti et al ( ) (2012, Johnes and Schwarzenberger (2011), Kounetas et al (2011), Kuah and Wong (2011), , Thanassoulis et al (2011), WolszczakDerlacz and Parteka (2011), Eff et al (2012), …”