Dualité géométrique et relations de correspondance entre courbes primales et duales. (Geometric duality and relationship between primal and dual curves). - Hafsa Deddi (1997)

Digital n-Pseudomanifold and n-Weakmanifold in a Binary (n+1)-Digital Image. - Mohammed Khachan; Patrick Chenin; Hafsa Deddi (DGCI, 2000)

Polyhedral Representation and Adjacency Graph in n-dimensional Digital Images. - Mohammed Khachan; Patrick Chenin; Hafsa Deddi (Comput. Vis. Image Underst., 2000)

Digital pseudomanifolds, digital weakmanifolds and Jordan-Brouwer separation theorem. - Mohammed Khachan; Patrick Chenin; Hafsa Deddi (Discret. Appl. Math., 2003)

Characterization of Trimmed NURBS Surface Boundaries Using Topological Criteria. - Mohammed Khachan; François Guibault; Hafsa Deddi (Numer. Algorithms, 2003)