[1] K. Atanassov,Intuitionistic fuzzy sets, Fuzzy Sets and Systems, 26 (1986), 87-96.
[2] K. Atanassov,More on intuitionistic fuzzy sets, Fuzzy Sets and Systems, 33 (1989), 37-45.
[3] K. Atanassov,Intuitionistic fuzzy relations, First Scienti c Session of the Mathematical Foun-dation Arti cial Intelligence, So a IM-MFAIS, (1989), 1-3.
[4] A. Azam and I. Beg,Common xed points of fuzzy mappings, Mathematical and Computer Modelling,49 (2009), 1331-1336.
[5] Y. E. Bao and C. X. Wu,Convexity and semicontinuity of fuzzy mappings, Computers &Mathematics with Applications,51 (2006), 1809-1816.
[6] P. Burillo and H. Bustince,Intuitionistic fuzzy relations (Part I), Mathware Soft Computing,2(1995), 5-38.
[7] P. Burillo and H. Bustince,Intuitionistic fuzzy relations (Part II), Mathware Soft Computing,2(1995), 117-148.
[8] H. Bustince and P. Burillo,Structures on intuitionistic fuzzy relations, Fuzzy Sets and Sys-tems,78 (1996), 293-303.
[9] H. Bustince,Construction of intuitionistic fuzzy relations with predetermined properties,Fuzzy Sets and Systems,109 (2000), 379-403.
[10] S. Heilpern,Fuzzy mappings and xed point theorem, Journal of Mathematical Analysis andApplications,83 (1981), 566-569.
[11] S. B. Hosseini, D. O'regan and R. Saadati, Some results on intuitionistic fuzzy spaces, Iranian Journal of Fuzzy Systems,4(1) (2007), 53-64.
[12] K. Hur, S. Y. Jand and H. W. Kang,Some intuitionistic fuzzy congruences, Iranian Journal of Fuzzy Systems,3(1) (2006), 45-57.
[13] B. S. Lee and S. J. Cho,A xed point theorem for contractive type fuzzy mappings, Fuzzy Sets and Systems,61(1994), 309-312.
[14] B. S. Lee, G. M. Lee, S. J. Cho, etc,A common xed point theorem for a pair of fuzzy mappings, Fuzzy Sets and Systems, 98 (1998), 133-136.
[15] H. W. Liu,Basic theorems of the Intuitionistic fuzzy sets, Journal of Mathematics for Tech-nology, (in chinese),16 (2000), 55-60.
[16] C. Z. Luo,Fuzzy set theory, Beijing Normal University Press, Beijing, (in chinese), 2005.
[17] S. Nanda and K. Kar,Convex fuzzy mappings, Fuzzy Sets and Systems, 48 (1992), 129-132.
[18] J. Y. Park and J. U. Jeong,Fixed point theorems for fuzzy mappings, Fuzzy Sets and Systems,87(1997), 111-116.
[19] M. Ra and and M. S. M. Noorani,Fixed point theorem on intuitionistic fuzzy metris spaces,Iranian Journal of Fuzzy Systems,3(1) (2006), 23-29.
[20] Y. R. Syau,On convex and concave fuzzy mappings, Fuzzy Sets and Systems, 103 (1999),163-168.
[21] Y. R. Syau,Closed and convex fuzzy sets, Fuzzy Sets and Systems, 110 (2000), 287-291.
[22] Y. R. Syau,Some properties of weakly convex fuzzy mappings, Fuzzy Sets and Systems, 123(2001), 203-207.
[23] Y. R. Syau and E. S. Lee, note on convexity and semicontinuity of fuzzy mappings, Applied Mathematics Letters,21 (2008), 814-819.
[24] Y. R. Syau, L. F. Sugianto and E. S. Lee,A class of semicontinuous fuzzy mappings, Applied Mathematics Letters,21 (2008), 824-827.
[25] L. Zhou, W. Z. Wu and W. X. Zhang,On properties of the cut sets of intuitionistic fuzzy relations, Fuzzy Systems and Mathematics, (in chinese), 23 (2009), 110-115.