@article{RCM_2007_41_1_a1,
     author = {Abdelaziz Kheldouni Mohammed Ben Abdellah Universitry and Morocco},
     title = {CW-complexes with duality},
     journal = {Revista colombiana de matematicas},
     pages = {15--21},
     publisher = {mathdoc},
     volume = {41},
     number = {1},
     year = {2007},
     url = {http://geodesic.mathdoc.fr/item/RCM_2007_41_1_a1/}
}