Text this: PPDP '08 proceedings of the 10th International ACM SIGPLAN Symposium on Principles and Practice of Declarative Programming : Valencia, Spain, July 15-17, 2008 / sponsored by Universidad Politecnica de Valencia ; in cooperation with ACM SIGPLAN ; supported by Departamento de Sistemas Informaticos y Computacion [and others] ; [program chair, Sergio Antoy ; symposium chair, Elvira Albert]. [electronic resource] :