Reflection Mechanisms for Combining Prolog Databases

@article{reflection-spe1991,
   apice = {ReflectionSpe1991},
   author = {Evelina Lamma and Paola Mello and Natali, Antonio},
   doi = {10.1002/spe.4380210605},
   issn = {0038-0644},
   journal = {Software: Practice and Experience},
   number = 6,
   numpages = 22,
   pages = {603--624},
   publisher = {Wiley},
   title = {Reflection Mechanisms for Combining Prolog Databases},
   volume = 21,
   year = 1991
}