Angheluţă, Carmen; Cristea, Irina Fuzzy grade of the complete hypergroups. (English) Zbl 1260.20086 Iran. J. Fuzzy Syst. 9, No. 6, 43-56 (2012). MSC: 20N20 20N25 PDFBibTeX XMLCite \textit{C. Angheluţă} and \textit{I. Cristea}, Iran. J. Fuzzy Syst. 9, No. 6, 43--56 (2012; Zbl 1260.20086)
Davvaz, B.; Hassani Sadrabadi, E.; Cristea, I. Atanassov’s intuitionistic fuzzy grade of i.p.s. hypergroups of order less than or equal to 6. (English) Zbl 1260.20087 Iran. J. Fuzzy Syst. 9, No. 4, 71-97 (2012). MSC: 20N20 20N25 PDFBibTeX XMLCite \textit{B. Davvaz} et al., Iran. J. Fuzzy Syst. 9, No. 4, 71--97 (2012; Zbl 1260.20087)
Cristea, I. About the fuzzy grade of the direct product of two hypergroupoids. (English) Zbl 1218.20049 Iran. J. Fuzzy Syst. 7, No. 2, 95-108 (2010). Reviewer: Mirela Ştefănescu (Constanţa) MSC: 20N20 20N25 PDFBibTeX XMLCite \textit{I. Cristea}, Iran. J. Fuzzy Syst. 7, No. 2, 95--108 (2010; Zbl 1218.20049)
Cristea, I.; Hoskova, S. Fuzzy pseudotopological hypergroupoids. (English) Zbl 1205.20069 Iran. J. Fuzzy Syst. 6, No. 4, Spec. Issue, 11-19 (2009). Reviewer: Wiesław A. Dudek (Wrocław) MSC: 20N20 54A40 20N25 PDFBibTeX XMLCite \textit{I. Cristea} and \textit{S. Hoskova}, Iran. J. Fuzzy Syst. 6, No. 4, 11--19 (2009; Zbl 1205.20069)
Corsini, P.; Cristea, I. Fuzzy grade of i.p.s. hypergroups of order 7. (English) Zbl 1102.20056 Iran. J. Fuzzy Syst. 1, No. 2, 15-32 (2004). MSC: 20N20 20N25 PDFBibTeX XMLCite \textit{P. Corsini} and \textit{I. Cristea}, Iran. J. Fuzzy Syst. 1, No. 2, 15--32 (2004; Zbl 1102.20056)