The Nobel Prize in Physics 1961
Robert Hofstadter, Rudolf Mössbauer
Rudolf Ludwig Mössbauer
The Nobel Prize in Physics 1961 was divided equally between Robert Hofstadter "for his pioneering studies of electron scattering in atomic nuclei and for his thereby achieved discoveries concerning the structure of the nucleons" and Rudolf Ludwig Mössbauer "for his researches concerning the resonance absorption of gamma radiation and his discovery in this connection of the effect which bears his name".
MLA style: "The Nobel Prize in Physics 1961". Nobelprize.org. 23 May 2013 http://www.nobelprize.org/nobel_prizes/physics/laureates/1961/