@article{10_4064_fm_115_2_75_80,
     author = {Yves Diers},
     title = {Cat\'egories multi\'equationnelles},
     journal = {Fundamenta Mathematicae},
     pages = {75--80},
     publisher = {mathdoc},
     volume = {115},
     number = {2},
     year = {1983},
     doi = {10.4064/fm-115-2-75-80},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-115-2-75-80/}
}