Absolute femtosecond measurements of Auger recombination dynamics in lead sulfide quantum dots B. Cho, W.K. Peters, V. Tiwari, A.P. Spencer, D. Baranov, R.J. Hill and D.M. Jonas EPJ Web of Conferences, 41 (2013) 04035 Published online: 13 March 2013 DOI: 10.1051/epjconf/20134104035