Apart from Reflections on Violence, I am unfamiliar with Georges Sorel's writings, and I have done only very limited reading on Bergson and Bergsonianism.
I understand that Bergson is among the main influences on Sorel's social criticism and syndicalism. This appears to be due, as far as I can tell, to Sorel's distaste for positivism and insistence on the inadequacies of social "sciences," which makes sense for an anti-economistic, non-doctrinaire Marxist like Sorel.
But that is pretty superficial. So, I'm looking for explanations of how Bergson fits into Sorel's thinking and/or into other Marxist lines of thought. I realize this is a pretty obscure question, so in lieu of direct answers I'd be happy to have any suggestions on reference works or articles treating this topic.