@techreport{toyreport,
author = {R.~Caballero and J.~Sanchez (eds.)},
institution = {UCM, Madrid},
month = {July},
title = {TOY: A Multiparadigm Declarative Language, Version 2.2.3},
projects = {MERIT,PROMESAS},
butype = {techreport},
year = {2006}
}