The Nobel Prize in Physics 1989
Norman F. Ramsey, Hans G. Dehmelt, Wolfgang Paul
Norman F. Ramsey
Hans G. Dehmelt
The Nobel Prize in Physics 1989 was divided, one half awarded to Norman F. Ramsey "for the invention of the separated oscillatory fields method and its use in the hydrogen maser and other atomic clocks", the other half jointly to Hans G. Dehmelt and Wolfgang Paul "for the development of the ion trap technique".
MLA style: "The Nobel Prize in Physics 1989". Nobelprize.org. 22 May 2013 http://www.nobelprize.org/nobel_prizes/physics/laureates/1989/