@article{M2AN_1970__4_3_83_0,
     author = {Zidani, J.},
     title = {Structuration de l'ensemble des sous-espaces d'un espace par une relation},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {83--89},
     publisher = {Dunod},
     address = {Paris},
     volume = {4},
     number = {R3},
     year = {1970},
     mrnumber = {297655},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/M2AN_1970__4_3_83_0/}
}