^"Archived copy"(PDF). مؤرشف(PDF) من الأصل في 2007-07-04. اطلع عليه بتاريخ 2012-02-19.{{استشهاد ويب}}: صيانة الاستشهاد: الأرشيف كعنوان (link) Name Index to Jeremy Gaige's Chess Tournament Crosstables, An Electronic Edition, Anders Thulin, Malmö, 2004-09-01
^Gaige، Jeremy (1987)، Chess Personalia, A Biobibliography، McFarland، ص. 191، ISBN:0-7864-2353-6 Note: Chess Personalia spells his last name "Jacobsen", but this may be a typo. The entry is alphabetized as if it were spelled "Jacobson" and Gaige uses that spelling in other works such as his tournament crosstables.
