См. Shuker Karl, Meet Mongolia’s Death Worm: The Shock of the New (Fortean Studies 4, 1998); Shuker Karl, The Beasts That Hide from Man: Seeking the World’s Last Undiscovered Animals (2003); Eberhart George М., Mysterious Creatures: A Guide to Cryptozoology, vol. 2 (2002); Raynal Michel, Olgoi'-khorkhoi, le «ver-intestin» mongol (http://cryptozoo.pages-perso-orange.fr/dossiers/olgoi/olgoi.htm).
