Message-Based Bucket Brigade: An Algorithm for the Apportionment of Credit Problem.

Marco Dorigo Message-Based Bucket Brigade: An Algorithm for the Apportionment of Credit Problem. 235-244 1991 conf/ecml/1991 EWSL db/conf/ecml/ewsl91.html#Dorigo91 http://dx.doi.org/10.1007/BFb0017018