The Nobel Prize in Chemistry 1967
Manfred Eigen, Ronald G.W. Norrish, George Porter
Ronald George Wreyford Norrish
The Nobel Prize in Chemistry 1967 was divided, one half awarded to Manfred Eigen, the other half jointly to Ronald George Wreyford Norrish and George Porter "for their studies of extremely fast chemical reactions, effected by disturbing the equlibrium by means of very short pulses of energy".
MLA style: "The Nobel Prize in Chemistry 1967". Nobelprize.org. 21 May 2013 http://www.nobelprize.org/nobel_prizes/chemistry/laureates/1967/