Horvath, J.; Molnar, J. On the density of non-overlapping unit spheres lying in a strip. (English) Zbl 0157.52603 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 10, 193-201 (1967). PDFBibTeX XMLCite \textit{J. Horvath} and \textit{J. Molnar}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 10, 193--201 (1967; Zbl 0157.52603)
Horvath, J. Bemerkungen zur Theorie der Planigone. (German) Zbl 0136.15504 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 8, 147-153 (1965). PDFBibTeX XMLCite \textit{J. Horvath}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 8, 147--153 (1965; Zbl 0136.15504)
Horvath, J. Über die regulären Mosaike der hyperbolischen Ebene. (German) Zbl 0132.14403 Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 7, 49-53 (1964). PDFBibTeX XMLCite \textit{J. Horvath}, Ann. Univ. Sci. Budap. Rolando Eötvös, Sect. Math. 7, 49--53 (1964; Zbl 0132.14403)