“…In this line, there are the ones that propose to combine them into a new, single and stand-alone lean-green approach [47], while there are others that, based on the fact that lean practices are not only well-documented but also widely (and successfully) adopted all over the world, as well as that the lean culture do favour the implementation of green initiatives, propose to use an already stablished lean environment as a catalyst to the adoption and further incorporation of green practices [43,44,53]. Within the first group, waste management methods, like Waste Reducing Techniques (WRT), are the most used strategies to perform the combination [37,38,41,60]. In [53], a combined approach based on the Theory of Inventive Problems-Solving tools, is presented.…”