MathSciNet bibliographic data MR1662820 90C29 (49J52 90C48) Chen, Guang Ya; Huang, X. X. Ekeland's $\epsilon$$\epsilon$-variational principle for set-valued mappings. Set-valued optimization. Math. Methods Oper. Res. 48 (1998), no. 2, 181–186. Article

For users without a MathSciNet license , Relay Station allows linking from MR numbers in online mathematical literature directly to electronic journals and original articles. Subscribers receive the added value of full MathSciNet reviews.