@article{SD_1962-1963__16_1_A4_0,
     author = {Desq, Roger},
     title = {\'El\'ements inversibles dans un demi-groupe {D}},
     journal = {S\'eminaire Albert Ch\^atelet et Paul Dubreil},
     note = {talk:4},
     pages = {1--16},
     year = {1962-1963},
     publisher = {Secr\'etariat math\'ematique},
     volume = {16},
     number = {1},
     zbl = {0203.01903},
     language = {fr},
     url = {https://www.numdam.org/item/SD_1962-1963__16_1_A4_0/}
}