articles in Wikipedia:
- article Boris Chirikov was started at February 16, 2008;
- article Chirikov criterion was substantially rewritten and corrected in Feb 2008;
- article standard map was significantly updated in Feb 2008;
- section Chaotic Dynamics in article comet Halley added at 6 Dec 2008;
- update of article Google matrix added at 8 Jan 2011;
- article CheiRank was started at January 9, 2011
- proposal to tag people at Wikipedia dated 25 Dec 2013
- updated Top 100 historical figures of Wikipedia on 12 June 2014