Sumit Bhansali Benjamin N. Grosof Extending the SweetDeal Approach for e-Procurement Using SweetRules and RuleML. 113-129 2005 conf/ruleml/2005 RuleML http://dx.doi.org/10.1007/11580072_10 db/conf/ruleml/ruleml2005.html#BhansaliG05