Shirali, Satish Contraction mappings and the equation \(\Delta u+\lambda \exp u=0\). (English) Zbl 0472.35069 Aligarh Bull. Math. 7, 77-80 (1977). MSC: 35P30 35J60 35J25 PDFBibTeX XMLCite \textit{S. Shirali}, Aligarh Bull. Math. 7, 77--80 (1977; Zbl 0472.35069)
Eisenfeld, J.; Lakshmikantham, V. Remarks on nonlinear contraction and comparison principle in abstract cones. (English) Zbl 0435.47059 J. Math. Anal. Appl. 61, 116-121 (1977). MSC: 47H10 47H07 34A34 PDFBibTeX XMLCite \textit{J. Eisenfeld} and \textit{V. Lakshmikantham}, J. Math. Anal. Appl. 61, 116--121 (1977; Zbl 0435.47059) Full Text: DOI
Majumdar, Manjusri Formulation of fixed point principle in a weak metric space. (English) Zbl 0392.54026 Bull. Math. Soc. Sci. Math. Répub. Soc. Roum., Nouv. Sér. 21(69), 339-343 (1977). MSC: 54H25 PDFBibTeX XMLCite \textit{M. Majumdar}, Bull. Math. Soc. Sci. Math. Répub. Soc. Roum., Nouv. Sér. 21(69), 339--343 (1977; Zbl 0392.54026)