Iqbal, Iram; Hussain, Nawab Ekeland-type variational principle with applications to nonconvex minimization and equilibrium problems. (English) Zbl 1428.58017 Nonlinear Anal., Model. Control 24, No. 3, 407-432 (2019). Reviewer: Vicenţiu D. Rădulescu (Craiova) MSC: 58E30 58C30 54H25 49J40 PDFBibTeX XMLCite \textit{I. Iqbal} and \textit{N. Hussain}, Nonlinear Anal., Model. Control 24, No. 3, 407--432 (2019; Zbl 1428.58017) Full Text: DOI
Hussain, N.; Shah, M. H.; Kutbi, M. A. Coupled coincidence point theorems for nonlinear contractions in partially ordered quasi-metric spaces with a \(Q\)-function. (English) Zbl 1215.54020 Fixed Point Theory Appl. 2011, Article ID 703938, 21 p. (2011). MSC: 54H25 PDFBibTeX XMLCite \textit{N. Hussain} et al., Fixed Point Theory Appl. 2011, Article ID 703938, 21 p. (2011; Zbl 1215.54020) Full Text: DOI EuDML