title: In memoriam Pekka Eljas Halonen (1927-2001).
authors.forename: F A
authors.initials: FA
authors.lastname: Murphy
authors.forename: C H
authors.initials: CH
authors.lastname: Calisher
authors.forename: B W
authors.initials: BW
authors.lastname: Mahy
authors.forename: P
authors.initials: P
authors.lastname: Arstila
mesh_terms: D001363:Awards and Prizes; D002487:Centers for Disease Control and Prevention, U.S.; D005387:Finland; D049673:History, 20th Century; D014481:United States; D014495:Universities / Q000266:history; D014773:Virology / Q000266:history*