found: LC database, Jan. 3, 2007.
found: Wikipedia, Jan. 3, 2007("Mixed martial arts (commonly referred to as MMA) is a combat sport in which two competitors attempt to achieve dominance over one another by utilizing a wide variety of permitted martial arts techniques, including striking and grappling. Well-known MMA organizations include the Ultimate Fighting Championship and PRIDE Fighting Championships.")
found: Revolution Martial Arts Web site, Jan. 3, 2007("Mixed Martial Arts - The accepted name for a competition format that blends striking, clinch and grappling.")
found: Google search, June 20, 2007(mixed martial arts; MMA; ultimate fighting)