August 1999

Martial Arts World

Vol 1, Num 1

Chuck Norris & Y. K. Kim & Billy Blanks & Seung Wan Lee

January 2005

Martial Arts World

Vol 7, Num 1

Y. K. Kim

April 2006

Martial Arts World

Vol 8, Num 2

B. G. Choung & George Allen & Peter Lowe Y. K. Kim & Tim McCarthy

August 2006

Martial Arts World

Vol 8, Num 3

Y. K. Kim

February 2007

Martial Arts World

Vol 9, Num 2

Y. K. Kim

February 2011

Martial Arts World

Vol 12, Num 1

Stephen Oliver & Y. K. Kim & Kirk Pelt & Toby Milroy & Keith Winkle

April 2011

Martial Arts World

Vol 12, Num 2

Toby Milroy & B. G. Choung & Y. K. Kim & Jun Lee & Chong Chu & Stephen Oliver & Kirk Pelt & Keith Winkle

September 2013

Martial Arts World

Vol 14, Num 2

Sang Lee & Y. K. Kim & Tommy Chang

July 1991

Tae Kwon Do Times

Vol 11, Num 5

Y. K. Kim