Bottema, O. Flexible hexagons. (English) Zbl 0149.18003 Nederl. Akad. Wet., Proc., Ser. A 70, 151-155 (1967). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 Documents Keywords:analytic geometry, projective geometry PDFBibTeX XMLCite \textit{O. Bottema}, Nederl. Akad. Wet., Proc., Ser. A 70, 151--155 (1967; Zbl 0149.18003)