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WikiPedia: Alexander_Soifer http://geombina.uccs.edu/ http://www.uccs.edu/Documents/asoifer/2013%20Publi... http://www.uccs.edu/asoifer/publications/book1.htm... http://www.uccs.edu/~asoifer/ http://www.uccs.edu/~asoifer/publications/book2.ht... http://www.uccs.edu/~asoifer/publications/book3.ht... http://www.uccs.edu/~asoifer/publications/book4.ht... http://data.bibliotheken.nl/id/thes/p333557433 http://www.genealogy.ams.org/html/id.phtml?id=7571... http://mak.bn.org.pl/cgi-bin/KHW/makwww.exe?BM=1&N...