“…et al (2006),Chang et al (2009),Coupet and Barnum (2010),Montoneri et al (2012),Castillo and Salem (2013),Whittaker et al (2017),Cordero and Tzeremes (2018),Papadimitriou and Johnes (2019),Ding et al (2020Ding et al ( (2008,Zhang et al (2008),Waldo (2007),Hsu and Hsueh (2009),Tochkov et al (2012),Mallikarjun et al (2014),Morfeldt and Silveira (2014),Seth and Patel (2014),Halkos et al (2015),Ke et al (2015),Hitt and Tambe (2016),Santín & Sicilia (2018),Carrington et al (2018),Vieira et al (2018), Czyźewski et al (2020), Xin-gang et al (2020), Johnes and Virmani (2020), Titl and De Witte (2021) 9 Compare CRS-VRS Glass et al (2006), Halkos and Tzeremes (2011a, 2011b), Sahin et al (2011), Zhang et al (2011), Sav (2012), Halkos and Tzeremes (2013), Baláź et al (2020), Czyźewski et al (2020) 8 Scale efficiency Halkos and Tzeremes (2009), Halkos and Tzeremes (2010b, 2010a), Jiménez-Sáez et al (2011), Jiménez-Sáez et al (2013), Du et al (2014), Schubert and Yang (2016), Natesan and Marathe (2017) # Panel 2: Orientation 14 Output-oriented Glass et al (2006), Cherchye et al (2007a), Chang et al (2009), Kantabutra and Tang (2010), Zhang et al (2011), Montoneri et al (2012), Sav (2012), Tochkov et al (2012), Haelermans and De Witte (2012), Asatryan and De Witte (2015), Natesan and Marathe (2017), Santín & Sicilia (2018), Cordero et al (2018), Johnes and Virmani (2020) 22 Input-oriented McCallion et al (2000), Glass et al (2006), Waldo (2007), Halkos and Tzeremes (2009), Hsu and Hsueh (2009), Halkos and Tzeremes (2010b, 2010a), De Witte and Saal (2010), Puenpatom and Rosenman (2008), Zhang et al (2008), Halkos and Tzeremes (2011a, 2011b), Sahin et al (2011), Halkos and Tzeremes (2013), Hitt and Tambe (2016), Schubert and Yang (2016), Natesan and Marathe (2017), Cordero et al (2017), Cordero and Tzeremes (2018), Vieira et al (2018), D'Inverno et al (2021), Titl and De Witte (. (2006), Mallikarjun et al (2014), Morfeldt and Silveira (2014) 5 Slack-based model Seth and Patel (2014), Ke et al (2015), Wang et al (2019)(super), Baláź et al (2020), Czyźewski et al (2020) 6 Distance function Jiménez-Sáez et al (2011), Jiménez-Sáez et al (2013), Halkos et al (2015), Pan et al (2019), Lin and Zhu (2019), Zhang et al (2009), Tochkov et al (2012), Halkos and Tzeremes (2013), Du et al (2014), Ke et al (2015), Hitt and Tambe (2016), Schubert and Yang (2016), Vieira et al (2018), Santín & Sicilia (2018), Baláź et al (2020), Xin-gang e...…”