In Pursuit of the Holy Grail

@article{holygrail-constraints2,
   abstract = {Constraint programming brings us closer to true declarative programming. Considerable progress has been made in this field; exciting challenges remain.},
   apice = {HolygrailConstraints2},
   author = {Eugene C. Freuder},
   doi = {10.1023/A:1009749006768},
   journal = {Constraints},
   number = 1,
   numpages = 5,
   pages = {57--61},
   publisher = {Springer},
   title = {In Pursuit of the Holy Grail},
   volume = 2,
   year = 1997
}