@article{SD_1971-1972__25_2_A2_0,
     author = {Behrens, Ernst August},
     title = {Une arithm\'etique non commutative des demi-groupes et des anneaux},
     journal = {S\'eminaire Dubreil. Alg\`ebre et th\'eorie des nombres},
     note = {talk:J2},
     pages = {J1--J5},
     publisher = {Secr\'etariat math\'ematique},
     volume = {25},
     number = {2},
     year = {1971-1972},
     mrnumber = {412309},
     zbl = {0386.20035},
     language = {fr},
     url = {http://www.numdam.org/item/SD_1971-1972__25_2_A2_0/}
}