Analysis of information sources in references of the Wikipedia article "Regina Tyshkevich" in English language version.
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: CS1 maint: unfit URL (link).(retrieved February 8, 2007); (archive; text-only, (retrieved May 11, 2016)){{citation}}
: CS1 maint: unfit URL (link).(retrieved February 8, 2007); (archive; text-only, (retrieved May 11, 2016))