@article{PDML_1971__8_1_123_0,
     author = {Boicescu, Vlad},
     title = {Sur les syst\`emes d\'eductifs dans la logique $\Theta $-valente},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {123--133},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     volume = {8},
     number = {1},
     year = {1971},
     mrnumber = {332433},
     zbl = {0262.02016},
     language = {fr},
     url = {http://www.numdam.org/item/PDML_1971__8_1_123_0/}
}