“…The second stream is represented by commentary and critique papers (Elango, 2004; Stevens and Bird, 2004; Hejazi, 2007; Osegowitsch and Sammartino, 2008; Oh, 2009; Rugman et al , 2012; Berrill, 2015; Rosa et al , 2020; Ietto-Gillies, 2022) which cover issues of measuring FLM for reviewed methods. The third stream compares different approaches based on a single aspect (Dörrenbächer, 2000; Czychon, 2020), and the fourth stream includes empirical papers applying proposed methods in various geographies and sectors (Rugman et al , 2012; O’Hagan‐Luff and Berrill, 2016; Mullen and O’Hagan-Luff, 2018; Berrill et al , 2019; Geiger and O’Hagan-Luff, 2020; Chadha and Berrill, 2021).…”