The Nobel Prize in Physics 1968
Luis Walter Alvarez
The Nobel Prize in Physics 1968 was awarded to Luis Alvarez "for his decisive contributions to elementary particle physics, in particular the discovery of a large number of resonance states, made possible through his development of the technique of using hydrogen bubble chamber and data analysis".
MLA style: "The Nobel Prize in Physics 1968". Nobelprize.org. 21 May 2013 http://www.nobelprize.org/nobel_prizes/physics/laureates/1968/index.html