“…In the time window established and presented in Figure 1, since year 2000 onwards, there is an increasing interest in RBT, with research increasing from 2012 to the present. The percentage of studies according to the classification type per year is: (i) 22.7% corresponding to approaches: 2012 (30) , 2017 (14) , 2018 (22) , 2020 (32,33) ; (ii) 18.2% corresponds to case study: 2000 (21) , 2010 (29) , 2014 (2) , 2016 (12) ; (iii) 9.1% corresponds to Taxonomy: 2014 (9) , 2019 (4) ; (iv) 9.1% corresponds to Techniques: 2005 (26) , 2018 (28) . (v) 40.9% corresponds to one article per year in Framework 2014 (27) , Tools 2007 (31) , Method 2016 (8) , Methodology 2013 (25) , Model 2012 (13) , Prediction of Defects 2016 (23) , Procedure 2014 (7) , Process 2010 (10) and Exploratory Review 2016 (24) .…”