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WikiPedia: OTR-23_Oka http://www.missilethreat.com/missilesoftheworld/id... http://www.valka.cz/newdesign/v900/clanek.php?id=1... http://www.peterhall.de/srbm/missiles/ussr/9m714/o... http://www.fas.org/nuke/guide/russia/theater/ss-23... http://www.globalsecurity.org/wmd/world/russia/ss-... http://ru.wikipedia.org/wiki/%D0%9E%D0%BA%D0%B0_(%... http://www.new-factoria.ru/missile/wobb/oka/oka.sh... https://commons.wikimedia.org/wiki/Category:OTR-23...