The objective of this article is to analyze the barriers faced by small and medium enterprises (SMEs) when implementing initiatives for sustainable development. For this purpose, a search equation was designed, and the 50 highest cited articles from the search results in Scopus between years 2013 and 2017 were reviewed. The selected criteria for the article analysis were article name, article year, country, continent, journal, Scimago Journal Rank, Scimago Quartiles, Affiliated Universities, abstract, and keywords. Among the main results, 175 barriers to sustainability for SMEs were identified. The barriers that appeared most frequently were lack of resources, the high initial capital cost of implementing sustainability measures, and lack of expertise. At the end of the article, a proposal is included which shows the 175 identified barriers, classified by “sector,” “sustainability tool,” and “internal/external” which can aid in new qualitative and quantitative studies of barriers to sustainability in SMEs.

The purpose of this study is to identify circular economy concept trends of Latin America with regards to Europe, in which a systematic review of literature (SRL) was made using Scopus data in order to define the search, to select the relevant articles, and to analyze the results. Seventy‐one articles from Scopus were reviewed, and the analysis was complemented by the analysis with 57 documents from other scientific Web browsers such as Mendeley, Scopus, Academic Google, ScienceDirect, and SciELo which sum a total of 128 documents which the majority have come from Europe. Main concepts were identified, barriers and trends. The main conclusion was which the current concept is not very clear; in spite of Europe knows that limitation, Latin America is making the same mistake implementation.

Purpose The purpose of this study is to review the literature on the Delphi method, its characteristics and current applications through an analysis of recent most-cited scientific papers, with an emphasis on three axes, namely, the number of rounds used, stakeholder participation relevance or only academic experts’ participation and the possibility of using indicators or techniques different from those related to descriptive statistics. Design/methodology/approach In total, 57 papers were initially reviewed, 10 of them with a high citation rate. Then, an analysis was made of papers in Scopus for the period 2015-2018 published in the Technological Forecasting and Social Change Journal and in the Futures and Foresight Journal, which had the characteristic of displaying quartile Q1 or Q2 in Scimago in addition to being in Scopus. Findings Among the main results, the authors observe the tendency to use fewer rounds, a higher prevalence of stakeholder participation and not only academic experts but also the use of new types of modified Delphi such as real-time spatial Delphi, Delphi group, market Delphi, real-world Delphi and policy Delphi. Originality/value Among the conclusions, the possibility of using other indicators or complementary techniques to the descriptive statistics is highlighted such as number of justifications or comments between rounds, coefficients to quantify the competence or degree of expertise of the participants, measures of the perception of the expert on the usefulness of the presented feedback, graphs of the number of arguments according to the number of questions, the Wilcoxon Ranked Pairs Test, the k means, Kolmogorov–Simonov test and the Mann–Whitney U-test.

This study seeks to identify and define the determinants of the sustainable innovation system (SIS). To achieve the objective, a qualitative approach was used through a systematic literature review using data from Web of Science (WOS) and Scopus. Two search equations were used to extract the data. In the first search equation, 69 documents were analyzed, and for the second, 102 documents were analyzed. Multiple definitions were found regarding SIS, it is worth highlighting in the findings the evolutionary process that these systems follow. As a contribution to the study, 79 determinants of an SIS are presented derived from the classic functions of an innovation system.

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