Matsumoto, Yukio Secondary intersectional properties of 4-manifolds and Whitney’s trick. (English) Zbl 0394.55010 Algebr. geom. Topol., Stanford/Calif. 1976, Proc. Symp. Pure Math., Vol. 32, Part 2, 99-107 (1978). MSC: 55N45 57N15 57Q35 57R40 57R95 PDFBibTeX XML
Meeks, William H. III.; Patrusky, Julie Representing homology classes by embedded circles on a compact surface. (English) Zbl 0392.57016 Ill. J. Math. 22, 262-269 (1978). MSC: 57R95 55N10 57N35 PDFBibTeX XMLCite \textit{W. H. III. Meeks} and \textit{J. Patrusky}, Ill. J. Math. 22, 262--269 (1978; Zbl 0392.57016)