1. Etale homotopy;Artin,1969
2. Concerning the homotopy properties of compacta;Borsuk;Fund. Math.,1968
3. Concerning the notion of the shape of compacta;Borsuk;Proc. Intern. Symp. on Topology and its Applications,1968
4. On the concept of shape for metrizable spaces;Borsuk;Bull. Acad. Polon. Sci. Sér. Sci. Math. Astron. Phys.,1970
5. Theory of shape;Borsuk,1971