Goal: This study aims to review and classify the main methods of criteria weights definition.Design / Methodology / Approach: From a systematized search were articles selected and analyzed, covering a timeline between 1949 and 2020.Results: Fifty sex methods were identified and discussed. Most (49) are subjective, eleven are objectives and three are hybrids. Considering the aggregation procedure, 33 are compensatory and 23 are non-compensatory. Most of the methods are for a single decision maker and just eleven are multidecision makers. The main contributions are published on European Journal of Operational Research journal. Limitations of the investigation:This work does not make a thorough technical analysis of the presented methods and it is not a notebook to indicate to researchers which method is the best for each type of situation. Some methods may not have been included. Practical implications:The selection and the definition of criteria weight is a fundamental question in the Multicriteria Decision Aid (MDCA) approach. The MCDA has a wide application on operation and production management. The diversity of published papers on this subject, the comprehension of its characteristics and applicability is a complex task for researchers and professionals who demand these techniques.Originality / Value: This work contributes to identify the state of the art of the models applied to the weight of the criteria, as well as to identify its characteristics and functionality regarding MCDA modeling.

RESUMONeste artigo, buscou-se literatura técnico-científica que determinasse padrões de qualidade na produção de briquetes e péletes no Brasil, entretanto nada foi encontrado. Assim, realizou-se estudo para se verificar como são estabelecidos os parâmetros para esses produtos; posteriormente, realizouse uma análise em nível internacional da evolução dos mesmos. Utilizou-se a pesquisa bibliométrica para quantificar estudos recentes na área, retornando 41 trabalhos na base SCOPUS e apenas seis na base Web of Science (ISI). Dentre eles verificou-se que apenas 18 da base SCOPUS e nenhum da base ISI tinham aderência ao assunto proposto. Com isso, foi possível verificar a ausência de padrões e conformidades bem estabelecidos para a qualidade da produção brasileira, dificultando a entrada no mercado internacional, necessitando com urgência de subsídios técnico-normativos para certificação internacional.Palavras chave: Péletes; Briquetes; Controle de Qualidade; DIN EN ISSO. ABSTRACTThis article propose to seek technical-scientific literature that determine quality standards in the production of briquettes and pellets, although it did not find any work concerning the theme. A study was performed to verify how the parameters for the analysis of these products are established; subsequently, an international analysis of the history and evolution of them. A bibliometric research was used to quantify recent studies in the area, which returned 41 possible papers in the SCOPUS database and only six in the Web of Science (ISI) database, of which only 18 of the SCOPUS database and none of the ISI database had adherence to the proposed subject. With this, it was possible to verify the lack of well-established standards and conformities concerning the quality of Brazilian production, making it difficult to enter the international market. It should be concluded, that, in order to be internationally certified, technical and normative subsidies for producers are urgently required.