Nochetto, Ricardo H. Asymptotic behaviour of the free boundary at its singular points for the one-phase Stefan problem. (Spanish) Zbl 0528.35086 Rev. Unión Mat. Argent. 30, 197-216 (1983). MSC: 35R35 35K05 35B40 35A20 35K20 58J35 PDFBibTeX XMLCite \textit{R. H. Nochetto}, Rev. Unión Mat. Argent. 30, 197--216 (1983; Zbl 0528.35086)
Arnol’d, V. I. Indices of singular points of 1-forms on a manifold with boundary, convolution of invariants of reflection groups, and singular projections of smooth surfaces. (English) Zbl 0431.58010 Russ. Math. Surv. 34, No. 2, 1-42 (1979). MSC: 58C25 58K99 58A10 37G99 57R70 11E16 57R25 PDFBibTeX XMLCite \textit{V. I. Arnol'd}, Russ. Math. Surv. 34, No. 2, 1--42 (1979; Zbl 0431.58010) Full Text: DOI