page 219 in: Q. Ashton Acton. 2013. Nucleic Acids—Advances in Research and Application: 2013 Edition ScholarlyEditions, Pp.281. ISBN 1481678264, 9781481678261
Page 1375 in: David Mahan Knipe, Peter M. Howley. Bernard N. Fields 2007.Fields' Virology, Lippincott Williams & Wilkins,Pp.3177. ISBN0781760607, 9780781760607