- zoomagazinsk.ru yakutsk/zoocenter
- gorus.online russian-news/double-joy-at-yakutsk-…There is a new addition at the “Ortho-Doidu” Zoo in Yakutsk, where two polar bear cubs were born.
- wikidata.org wiki/Q4537274imported from Wikimedia project. Russian Wikipedia. inception. 26 January 2001. 1 reference. imported from Wikimedia project. Russian Wikipedia.
- pets1.ru sakha/yakutsk/zooatele/
- zoorating.ru komp/zoocenter-yakutsk