“…As Figure 3 suggests, the majority of studies were focused on evaluating the quality of digital libraries' services from the perspective of the users (Ahmad & Abawajy, 2014;Amannollahi-Nik, Alipoorhafezi & Matlabi, 2014;Amini, 2014;Garibay, Guti errez & Figueroa, 2010;Helena Vinagre, Gaspar Pinto & Ochôa, 2011;Jafar-Begloo, Hamidi, Anvari & Rouhani, 2014;Kyrillidou & Giersch, 2005;Lai, Chiu, Huang, Chen & Huang, 2014;Moreira, Gonc ßalves, Laender & Fox, 2009;Naiej, Noroozi & Hamidi, 2012;Sohrabi, Farzaneh & Reisi, 2010;Yousefzadeh-Najdi, 2013 Goh et al, 2006;Jose, 2007;Masoudnia & Ali-Ebadi, 2013;Tripathi & Jeevan, 2011;Xie, 2006Xie, , 2008. Studies are conducted to: • analyse aspects and methods used in the evaluation of digital libraries (Azadi-Ahmadabadi, 2008;Cullen, 2003Cullen, , 2004Esfandiyari-moghadam & Bayat, 2008;Mehrabadi, 2011;Noroozi, 2012;Saracevic, 2005;Zhang, 2010) • analyse the user interface/usability of digital • efficacy (Buchanan & Salako, 2009) • information security (Hariri & Nazari, 2012) • task orientation (Meyyappan, Foo & Chowdhury, 2004) • electronic resources (Hariri, Nooshinfard & Radfar, 2014) • impact (Jabeen et al, 2017;Madle, Kostkova & Roudsari, 2008) • open sources (...…”