Bottema, O. A theorem of F. J. van den Berg (1833–1892). (English) Zbl 0375.50007 Nieuw Arch. Wiskd., III. Ser. 26, 161-171 (1978). Reviewer: J. F. Rigby Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document MSC: 51F99 Metric geometry 51-03 History of geometry 01A55 History of mathematics in the 19th century Biographic References: Van den Berg, F. J. PDF BibTeX XML Cite \textit{O. Bottema}, Nieuw Arch. Wiskd., III. Ser. 26, 161--171 (1978; Zbl 0375.50007)