1. Le relèvement des homotopies à zéro;Apéry,1992
2. Ten topologies for X×Y;Brown;Quart. J. Math. Oxford Ser.,1963
3. Function spaces and product topologies;Brown;Quart. J. Math. Oxford Ser.,1964
4. Elements of General Topology;Hu,1964
5. The Topology of CW Complexes;Lundell,1969