@article{ITA_1988__22_4_395_0,
     author = {Bellia, M.},
     title = {Logic and functional programming by retractions : operational semantics},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {395--436},
     publisher = {EDP-Sciences},
     volume = {22},
     number = {4},
     year = {1988},
     mrnumber = {984584},
     zbl = {0666.68012},
     language = {en},
     url = {http://www.numdam.org/item/ITA_1988__22_4_395_0/}
}