@article{ITA_1977__11_4_303_0, author = {P\u{a}un, G.}, title = {An operation with languages occurring in the linguistic approach to the management}, journal = {RAIRO. Informatique th\'eorique}, pages = {303--310}, publisher = {Centrale des revues, Dunod-Gauthier-Villars}, address = {Montreuil}, volume = {11}, number = {4}, year = {1977}, zbl = {0371.68026}, mrnumber = {495257}, language = {en}, url = {http://www.numdam.org/item/ITA_1977__11_4_303_0/} }