Söding, J. Research Group of Computational Biology, MPI for Biophysical Chemistry, Max Planck Society;
http://books.google.de/books?id=mfXAAQAAQBAJ&pg=PA481&lpg=PA481&dq=Laser+cooling+and+trapping+with+rectified+optical+dipole+forces.&source=bl&ots=FycBxcTShx&sig=R3AO5kCzhcjo3KKI_i9ddL6qrnE&hl=de&sa=X&ei=ZKAqU9ysHImRtAaL4oCQDQ&ved=0CEwQ6AEwAw (Publisher version)