Applied Physics Letters, 2015, 107, 073301.
Ansari-Rad, M.; Garcia-Belmonte, G.; Bisquert, J.
Consistent formulation of the crossover from density to velocity dependent recombination in organic solar cells.
Article page: http://scitation.aip.org/content/aip/journal/apl/107/7/10.1063/1.4928758