Mulder J. 1994. Additional information on Vipera albizona. Deinsea 1:77-83. ISSN 0923-9308. PDF at Natuurhistorisch Museum Rotterdam. Accessed 2 October 2006.
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Mulder J. 1994. Additional information on Vipera albizona. Deinsea 1:77-83. ISSN 0923-9308. PDF at Natuurhistorisch Museum Rotterdam. Accessed 2 October 2006.