- vk.com wall-42050150_2Pi World Ranking List pi-world-ranking-list.com.
- twitter.com sureshsharmapi1π World Record Holder by recalling 70,030 digits of Pi.
- iv-chgk.livejournal.com 2694.htmlРедактор: Константин Сахаров (Ивантеевка) За всевозможную помощь редактор благодарит Николая Коврижных (Киров) и клуб интеллектуальных игр Вятки, Юрия...
- keithlard.livejournal.com 143160.html(Link). I did a Maths degree, and have found ever since that while I can cope fine with all the high-level conceptual Maths, my arithmetic skills are far from 1337.