Williams C A, Angelman H, Clayton-Smith J, Driscoll D J, Hendrickson J E, Knoll J H, Magenis R E, Schinzel A, Wagstaff J, Whidden E M
Department of Pediatrics, University of Florida College of Medicine, Gainesville, USA.
Am J Med Genet. 1995 Mar 27;56(2):237-8. doi: 10.1002/ajmg.1320560224.