Table 2.

Refined search results.

Database	Initial	Filtered	References
SCOPUS	299	9	Davis, Jiang, Morgan, Nuamah, and Terry (2016), Florez, Lauras, Dupont, and Charles (2013), Haghi, Ghomi, and Jolai (2017), Li, Hernandez, Milburn, and Ramirez-Marquez (2018), Lopez et al. (2020), Yu, Yang, Miao and Zhang (2018), Yu, Zhang, Yang and Miao (2018), Tall, Mason, van Aalst, Suarez, Ait-Chellouche, Diallo, and Braman (2012) and Zhan and Liu (2016)
Web of Science	46	22	Braman et al. (2013), Chevuturi and Dimri (2016), de la Poterie et al. (2018), Coughlan de Perez et al. (2016), Coughlan de Perez et al. (2015), Dore (2003), Du, Zhang, Deng, and Li (2014), Han and Tang (1999), Hsieh (2004), Jin, Cheng, and Wei (2008), Kgakatsi (2014), Kim, Kim, and Park (2009), Miao and Ding (2017), Mude, Barrett, McPeak, Kaitho, and Kristjanson (2009), Musa et al. (2018), Noda (2016), Pisarenko and Rodkin (2006), Ramírez and Briones (2017), Shen, Ou, Chen, Zhang, and Tan (2013), van der Laan, van Dalen, Rohrmoser, and Simpson (2016), Wang (2013) and Xu, Qi, and Hua (2010)
ABI Inform	7	3	Guo, Hou, Yang, Du, and Xiao (2015), Sheu (2010) and Song, Chen, and Lei (2018)
Google Scholar	241	4	Basu, Roy, and DasBit (2018), de Silva (2011), Matori and Lawal (2014) and Zhang, Feng, and Wang (2018)