Peneva, V.; Popchev, I. Fuzzy multi-criteria decision making algorithms. (English) Zbl 1224.90101 C. R. Acad. Bulg. Sci. 63, No. 7, 979-992 (2010). Reviewer: Angela Slavova (Sofia) MSC: 90B50 68U35 PDFBibTeX XMLCite \textit{V. Peneva} and \textit{I. Popchev}, C. R. Acad. Bulg. Sci. 63, No. 7, 979--992 (2010; Zbl 1224.90101)
Peneva, Vania; Popchev, Ivan Models for decision making by fuzzy relations and fuzzy numbers for criteria evaluations. (English) Zbl 1200.91078 C. R. Acad. Bulg. Sci. 62, No. 10, 1217-1222 (2009). Reviewer: Angela Slavova (Sofia) MSC: 91B06 PDFBibTeX XMLCite \textit{V. Peneva} and \textit{I. Popchev}, C. R. Acad. Bulg. Sci. 62, No. 10, 1217--1222 (2009; Zbl 1200.91078)
Peneva, Vania; Popchev, Ivan Models for fuzzy multicriteria decision making based on fuzzy relations. (English) Zbl 1200.91077 C. R. Acad. Bulg. Sci. 62, No. 5, 551-558 (2009). Reviewer: Angela Slavova (Sofia) MSC: 91B06 PDFBibTeX XMLCite \textit{V. Peneva} and \textit{I. Popchev}, C. R. Acad. Bulg. Sci. 62, No. 5, 551--558 (2009; Zbl 1200.91077)
Peneva, Vania; Popchev, Ivan Fuzzy criteria importance depending on membership degrees of fuzzy relations. (English) Zbl 1164.90017 C. R. Acad. Bulg. Sci. 61, No. 5, 579-584 (2008). Reviewer: Angela Slavova (Sofia) MSC: 90B50 03E72 PDFBibTeX XMLCite \textit{V. Peneva} and \textit{I. Popchev}, C. R. Acad. Bulg. Sci. 61, No. 5, 579--584 (2008; Zbl 1164.90017)
Peneva, Vania; Popchev, Ivan Fuzzy criteria importance with weighting functions. (English) Zbl 1164.90016 C. R. Acad. Bulg. Sci. 61, No. 3, 293-300 (2008). Reviewer: Angela Slavova (Sofia) MSC: 90B50 03E72 91B06 PDFBibTeX XMLCite \textit{V. Peneva} and \textit{I. Popchev}, C. R. Acad. Bulg. Sci. 61, No. 3, 293--300 (2008; Zbl 1164.90016)
Peneva, Vania; Popchev, Ivan Aggregation of fuzzy relations using weighting function. (English) Zbl 1137.90004 C. R. Acad. Bulg. Sci. 60, No. 10, 1047-1052 (2007). Reviewer: Angela Slavova (Sofia) MSC: 90B50 PDFBibTeX XMLCite \textit{V. Peneva} and \textit{I. Popchev}, C. R. Acad. Bulg. Sci. 60, No. 10, 1047--1052 (2007; Zbl 1137.90004)
Peneva, V.; Popchev, I. Aggregation of fuzzy preference relations by composition. (English) Zbl 1098.90040 C. R. Acad. Bulg. Sci. 59, No. 4, 373-380 (2006). Reviewer: Angela Slavova (Sofia) MSC: 90B50 91B06 91B08 03E72 PDFBibTeX XMLCite \textit{V. Peneva} and \textit{I. Popchev}, C. R. Acad. Bulg. Sci. 59, No. 4, 373--380 (2006; Zbl 1098.90040)
Peneva, V.; Popchev, I. Aggregation of fuzzy preference relations with different importance. (English) Zbl 1115.91002 C. R. Acad. Bulg. Sci. 58, No. 5, 499-506 (2005). Reviewer: Angela Slavova (Sofia) MSC: 91A06 91B08 03E72 PDFBibTeX XMLCite \textit{V. Peneva} and \textit{I. Popchev}, C. R. Acad. Bulg. Sci. 58, No. 5, 499--506 (2005; Zbl 1115.91002)
Peneva, V.; Popchev, I. Transformations by parameterized t-norms preserving the properties of fuzzy relations. (English) Zbl 1059.03059 C. R. Acad. Bulg. Sci. 57, No. 10, 9-18 (2004). Reviewer: Angela Slavova (Sofia) MSC: 03E72 47S40 PDFBibTeX XMLCite \textit{V. Peneva} and \textit{I. Popchev}, C. R. Acad. Bulg. Sci. 57, No. 10, 9--18 (2004; Zbl 1059.03059)
Peneva, V.; Popchev, I. Weighted aggregation of fuzzy relations. (English) Zbl 1043.47052 C. R. Acad. Bulg. Sci. 56, No. 10, 29-36 (2003). Reviewer: Angela Slavova (Sofia) MSC: 47S40 47B49 PDFBibTeX XMLCite \textit{V. Peneva} and \textit{I. Popchev}, C. R. Acad. Bulg. Sci. 56, No. 10, 29--36 (2003; Zbl 1043.47052)
Peneva, V.; Popchev, I. Properties of fuzzy relations obtained by aggregation operators. (English) Zbl 1030.90146 C. R. Acad. Bulg. Sci. 56, No. 1, 9-16 (2003). Reviewer: Angela Slavova (Sofia) MSC: 90C70 93C42 PDFBibTeX XMLCite \textit{V. Peneva} and \textit{I. Popchev}, C. R. Acad. Bulg. Sci. 56, No. 1, 9--16 (2003; Zbl 1030.90146)