1. On the proper homotopy type of simplicial complexes;Brown,1975
2. On proper homotopy theory for non compact 3-manifolds;Brown;Trans. Amer. Math. Soc.,1977
3. Shape Theory, Categorical Methods of Approximation;Cordier,1989
4. Čech and Steenrod Homotopy Theories with Applications to Geometric Topology;Edwards,1976
5. An isomorphism theorem of the Hurewicz type in the proper homotopy category;Extremiana;Fund. Math.,1989