1. The locally flat approximation of cell-like embedding relations;Ancel,1976
2. The role of countable dimensionality in the theory of cell-like relations;Ancel;Trans. Amer. Math. Soc.,1985
3. The locally flat approximation of cell-like embedding relations;Ancel;Ann. of Math.,1979
4. Approximating surfaces by polyhedral ones;Bing;Ann. of Math.,1957
5. Generalized manifolds;Bredon,1970