1. K. Borsuk, On decompositions of shapes into products, in: Proceedings of the VI Wsesojuznaja Topologiczeskaja Konferencja, Tbilisi, 1972, pp. 137–141
2. Theory of Shape;Borsuk,1975
3. What is the theory of shape?;Borsuk;Bull. Austral. Math. Soc.,1980
4. Cohomology of Groups;Brown,1995
5. Compact flat Riemannian manifolds I;Charlap;Ann. of Math. (II),1965