@techreport{JV03TR,
 author =  "P. Juli{\'a}n-Iranzo and C. Villamizar-Lamus",
 title =  "Analysing Definitional Trees: Looking for Determinism",
 year =  "Dec. 2003",
 pages = "18 pp.",
 institution = "Departamento de Inform\'atica,
                Universidad de Castilla-La Mancha",
 number = {DIAB-03-12-2}}