^"What ever became of 'geniuses'?". Time. December 19, 1977. اطلع عليه بتاريخ 2011-05-14. "South Korea's Kim Ung-Yong, a 14-year-old prodigy who was speaking four languages and solving integral calculus problems at age four, is said to tip the mental scales at 210, worth a mention in the Guinness Book of World Records."