The objective of this article is to analyze the pre-existing studies that investigate the link between the circular economy and financial aspects in order to understand the evolution of the circular economy literature and its relationship with finance. In addition, it proposes an investigation of empirical evidence of economic-financial gains resulting from the adoption of circular production practices. The methodology used to achieve this goal was a systematic review of the literature and bibliometric analysis. Thus, it was possible to conclude that the barriers faced by companies adopting the circular economy in relation to financial performance are defined by (i) the size of the business and the initial investment cost, (ii) difficulties for micro and small companies, (iii) to a more complex structuring of the business, and (iv) greater exposure to risk, as the circular economy is a new concept and is and not as representative as a linear standard system. The results show that few studies investigate corporate gains from circular production, which is, therefore, an important topic for future research and the major contribution of this paper.

This paper presents a bibliometric analysis of the Theory of Constraints (TOC) research i.e. a total of 1009 journal articles published since 1984. From a bibliometric point of view, the state of the art was mapped and research gaps in the scientific literature identified, creating opportunities for future research. The Production area leads in number of publications, and applications in the Process of Ongoing Improvement in general have been receiving less attention from academics. It is also worth noting that the International Journal of Production Research has the highest concentration of published works on TOC. The results show that TOC is in continuous development with a trend of growth and therefore demands additional inquiry. The main contributions of this work are: (a) presenting a comprehensive historical review and bibliometric analysis on TOC in a manner not yet illustrated in the literature; (b) addressing potential implications and directions for the IJPR community on TOC research; and (c) offering avenues for future research on how to advance the extant literature of TOC.

Purpose: Although product design is a fundamental element in the transition towards the circular economy, the knowledge of practices, methods and tools oriented to circular product design has not been widely developed. This study aims to contribute to the circular economy research area by investigating and analyzing the main design approaches to circular products and their relationship to new product development.Design/methodology/approach: The authors conducted a systematic review and qualitative analysis of 120 articles. In these studies, the authors analyzed aspects such as design strategies used, the barriers to the adoption of circular product design and the relationships between the phases of new product development processes with circular product design studies.Findings: The findings revealed that the circular product design approach has added new design strategies to those already recommended by ecodesign, such as multiple use cycles, emotional durability and biomimicry. Furthermore, the results showed that most circular product design articles focus on the planning and concept development phases of the new product development process.Originality/value: In this article, the authors systematized the findings of an emergent research area: the development of new products for the circular economy. Its main contributions lie in the identification of design strategies, the classification of Design for X approaches, analysis of such approaches during the new product development process and discussion of their main barriers. Finally, this study presents contributions for managers and designers who are starting the transition to a circular strategy.