Some_languages_that_support_constraint_programming Constraint_programming

^ van hoeve, willem-jan; hunting, marcel; kuip, chris (2012). aimms interface constraint programming (pdf). aimms. 
^ robert fourer; david m. gay (2002). extending algebraic modeling language support constraint programming . informs journal on computing. 14: 322–344. doi:10.1287/ijoc.14.4.322.2825. 
^ tim felgentreff; alan borning; robert hirschfeld (2014). specifying , solving constraints on object behavior . journal of object technology. 13: 1–38. doi:10.5381/jot.2014.13.4.a1. 
^ chip v5 cosytec