EntityQ2904185· pop 5· linked from 16 articlesFred RoyersSign in to savekickboxerRecent publications · Crossref5 total works indexedPerceived Usefulness, Perceived Ease of Use, and User Acceptance of Information Technology · 1989 · cited 43,383xColorimetric Method for Determination of Sugars and Related Substances · 1956 · cited 41,858xSocial Identity Theory and the Organization · 1989 · cited 31,509xUser Acceptance of Information Technology: Toward A Unified View1 · 2003 · cited 29,652xUser Acceptance of Computer Technology: A Comparison of Two Theoretical Models · 1989 · cited 16,075xvia Crossref · CC0ConnectionsParisEntityAmsterdamEntityCategories1955 births20th-century Dutch sportsmen21st-century Dutch peopleDutch male karatekaDutch male kickboxersDutch savateursKickboxing commentatorsLiving peopleMartial artists from GelderlandMedalists at the 1981 World GamesMiddleweight kickboxersSportspeople from ArnhemWorld Games medalists in karate